TY  - JOUR
AU  - Nikolić, M.V.
AU  - Vasiljević, Zorka
AU  - Luković, M.D.
AU  - Pavlović, Vera P.
AU  - Krstić, J.B.
AU  - Vujancević, J.
AU  - Tadić, N.
AU  - Vlahović, Branislav
AU  - Pavlović, Vladimir
PY  - 2019
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/5136
AB  - Zinc ferrite nanocrystalline powder was obtained by solid state synthesis of starting zinc oxide and hematite nanopowders. Field emission scanning electron microscopy and transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy and Raman spectroscopy confirmed the formation of nanocrystalline zinc-ferrite powder with a mixed spinel structure with small amounts of remaining zinc oxide and hematite as impurities. Thick film paste was formed and screen printed on test interdigitated PdAg electrodes on alumina substrate. Formation of a porous nanocrystalline structure was confirmed by scanning electron microscopy and Hg porosimetry. Humidity sensing properties of zinc ferrite thick films were investigated by monitoring the change in impedance in the relative humidity interval 30%-90% in the frequency range 42 Hz-1 MHz at room temperature (25°C) and 50°C. At 42 Hz at both analyzed temperatures the impedance reduced ~46 times in the humidity range 30%-90%. The dominant influence of grain boundaries was confirmed by analysis of complex impedance with an equivalent circuit.
PB  - Blackwell Publishing Ltd
T2  - International Journal of Applied Ceramic Technology
T1  - Investigation of ZnFe 2 O 4 spinel ferrite nanocrystalline screen-printed thick films for application in humidity sensing
EP  - 993
IS  - 3
SP  - 981
VL  - 16
DO  - 10.1111/ijac.13190
ER  - 

@article{
author = "Nikolić, M.V. and Vasiljević, Zorka and Luković, M.D. and Pavlović, Vera P. and Krstić, J.B. and Vujancević, J. and Tadić, N. and Vlahović, Branislav and Pavlović, Vladimir",
year = "2019",
abstract = "Zinc ferrite nanocrystalline powder was obtained by solid state synthesis of starting zinc oxide and hematite nanopowders. Field emission scanning electron microscopy and transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy and Raman spectroscopy confirmed the formation of nanocrystalline zinc-ferrite powder with a mixed spinel structure with small amounts of remaining zinc oxide and hematite as impurities. Thick film paste was formed and screen printed on test interdigitated PdAg electrodes on alumina substrate. Formation of a porous nanocrystalline structure was confirmed by scanning electron microscopy and Hg porosimetry. Humidity sensing properties of zinc ferrite thick films were investigated by monitoring the change in impedance in the relative humidity interval 30%-90% in the frequency range 42 Hz-1 MHz at room temperature (25°C) and 50°C. At 42 Hz at both analyzed temperatures the impedance reduced ~46 times in the humidity range 30%-90%. The dominant influence of grain boundaries was confirmed by analysis of complex impedance with an equivalent circuit.",
publisher = "Blackwell Publishing Ltd",
journal = "International Journal of Applied Ceramic Technology",
title = "Investigation of ZnFe 2 O 4 spinel ferrite nanocrystalline screen-printed thick films for application in humidity sensing",
pages = "993-981",
number = "3",
volume = "16",
doi = "10.1111/ijac.13190"
}

Nikolić, M.V., Vasiljević, Z., Luković, M.D., Pavlović, V. P., Krstić, J.B., Vujancević, J., Tadić, N., Vlahović, B.,& Pavlović, V.. (2019). Investigation of ZnFe 2 O 4 spinel ferrite nanocrystalline screen-printed thick films for application in humidity sensing. in International Journal of Applied Ceramic Technology
Blackwell Publishing Ltd., 16(3), 981-993.
https://doi.org/10.1111/ijac.13190

Nikolić M, Vasiljević Z, Luković M, Pavlović VP, Krstić J, Vujancević J, Tadić N, Vlahović B, Pavlović V. Investigation of ZnFe 2 O 4 spinel ferrite nanocrystalline screen-printed thick films for application in humidity sensing. in International Journal of Applied Ceramic Technology. 2019;16(3):981-993.
doi:10.1111/ijac.13190 .

Nikolić, M.V., Vasiljević, Zorka, Luković, M.D., Pavlović, Vera P., Krstić, J.B., Vujancević, J., Tadić, N., Vlahović, Branislav, Pavlović, Vladimir, "Investigation of ZnFe 2 O 4 spinel ferrite nanocrystalline screen-printed thick films for application in humidity sensing" in International Journal of Applied Ceramic Technology, 16, no. 3 (2019):981-993,
https://doi.org/10.1111/ijac.13190 . .

TY  - JOUR
AU  - Nikolić, Maria Vesna
AU  - Vasiljević, Zorka Z.
AU  - Luković, Miloljub D.
AU  - Pavlović, Vera P.
AU  - Vujancević, Jelena
AU  - Radovanović, Milan
AU  - Krstić, Jugoslav B.
AU  - Vlahović, Branislav
AU  - Pavlović, Vladimir
PY  - 2018
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4705
AB  - Pseudobrookite based nanopowder was obtained by solid state synthesis of starting hematite and anatase nanopowders in the weight ratio 55:45. Structural and morphological properties were analyzed using X-ray diffraction (XRD), BET, X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, UV/Vis diffuse reflectance spectroscopy, Field emission scanning electron microscopy (FESEM) and Transmission electron microscopy (TEM) confirming the formation of nanocrystalline pseudobrookite. The obtained powder was mixed with a binder (ethyl cellulose), dispersant (alpha-terpinol) and adhesion agents (acetic acid and distilled water) to obtain a thick film paste. It was screen printed on alumina substrate with interdigitated PdAg electrodes and fired at 600 degrees C for 30 min. Formation of a porous nanocrystalline thick film structure was shown using Scanning electron microscopy (SEM), while Hall measurements enabled determination of carrier mobility. Change of impedance response in the frequency range 42 Hz-1 MHz with humidity was analyzed at room temperature (25 degrees C) and 50 degrees C in the relative humidity range 30-90% and 40-90%, respectively. At 42 Hz, and room temperature the impedance reduced similar to 28 times, while at 50 degrees C it reduced similar to 147 times in the relative humidity range 40-90%. The sensor showed rapid response (16 s) and relatively low hysteresis (8.39% at 25 degrees C and 2.64% at 50 degrees C) showing that this is a promising material for application in humidity sensing.
PB  - Elsevier Science Sa, Lausanne
T2  - Sensors and Actuators B-Chemical
T1  - Humidity sensing properties of nanocrystalline pseudobrookite (Fe2TiO5) based thick films
EP  - 664
SP  - 654
VL  - 277
DO  - 10.1016/j.snb.2018.09.063
ER  - 

@article{
author = "Nikolić, Maria Vesna and Vasiljević, Zorka Z. and Luković, Miloljub D. and Pavlović, Vera P. and Vujancević, Jelena and Radovanović, Milan and Krstić, Jugoslav B. and Vlahović, Branislav and Pavlović, Vladimir",
year = "2018",
abstract = "Pseudobrookite based nanopowder was obtained by solid state synthesis of starting hematite and anatase nanopowders in the weight ratio 55:45. Structural and morphological properties were analyzed using X-ray diffraction (XRD), BET, X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, UV/Vis diffuse reflectance spectroscopy, Field emission scanning electron microscopy (FESEM) and Transmission electron microscopy (TEM) confirming the formation of nanocrystalline pseudobrookite. The obtained powder was mixed with a binder (ethyl cellulose), dispersant (alpha-terpinol) and adhesion agents (acetic acid and distilled water) to obtain a thick film paste. It was screen printed on alumina substrate with interdigitated PdAg electrodes and fired at 600 degrees C for 30 min. Formation of a porous nanocrystalline thick film structure was shown using Scanning electron microscopy (SEM), while Hall measurements enabled determination of carrier mobility. Change of impedance response in the frequency range 42 Hz-1 MHz with humidity was analyzed at room temperature (25 degrees C) and 50 degrees C in the relative humidity range 30-90% and 40-90%, respectively. At 42 Hz, and room temperature the impedance reduced similar to 28 times, while at 50 degrees C it reduced similar to 147 times in the relative humidity range 40-90%. The sensor showed rapid response (16 s) and relatively low hysteresis (8.39% at 25 degrees C and 2.64% at 50 degrees C) showing that this is a promising material for application in humidity sensing.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Sensors and Actuators B-Chemical",
title = "Humidity sensing properties of nanocrystalline pseudobrookite (Fe2TiO5) based thick films",
pages = "664-654",
volume = "277",
doi = "10.1016/j.snb.2018.09.063"
}

Nikolić, M. V., Vasiljević, Z. Z., Luković, M. D., Pavlović, V. P., Vujancević, J., Radovanović, M., Krstić, J. B., Vlahović, B.,& Pavlović, V.. (2018). Humidity sensing properties of nanocrystalline pseudobrookite (Fe2TiO5) based thick films. in Sensors and Actuators B-Chemical
Elsevier Science Sa, Lausanne., 277, 654-664.
https://doi.org/10.1016/j.snb.2018.09.063

Nikolić MV, Vasiljević ZZ, Luković MD, Pavlović VP, Vujancević J, Radovanović M, Krstić JB, Vlahović B, Pavlović V. Humidity sensing properties of nanocrystalline pseudobrookite (Fe2TiO5) based thick films. in Sensors and Actuators B-Chemical. 2018;277:654-664.
doi:10.1016/j.snb.2018.09.063 .

Nikolić, Maria Vesna, Vasiljević, Zorka Z., Luković, Miloljub D., Pavlović, Vera P., Vujancević, Jelena, Radovanović, Milan, Krstić, Jugoslav B., Vlahović, Branislav, Pavlović, Vladimir, "Humidity sensing properties of nanocrystalline pseudobrookite (Fe2TiO5) based thick films" in Sensors and Actuators B-Chemical, 277 (2018):654-664,
https://doi.org/10.1016/j.snb.2018.09.063 . .

TY  - JOUR
AU  - Nikolić, M.V.
AU  - Sekulić, D.L.
AU  - Vasiljević, Zorka
AU  - Luković, M.D.
AU  - Pavlović, Vladimir
AU  - Aleksić, O.S.
PY  - 2017
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4367
AB  - In this work we have investigated changes in dielectric properties, electrical conductivity and complex impedance of Fe2TiO5 nanopowder compacts and bulk samples as a function of elevated temperature (room to 423 K compacts, to 443 K bulk samples), frequency (100 Hz-1 MHz) and composition (starting molar ratio of Fe2O3 and TiO2 1:1-PSB11 and 1:1.5-PSB115). XRD, SEM and TEM analysis of PSB11 and PSB115 powders obtained by a simple solid state process from starting hematite and anatase nanopowders confirmed the formation of nanostructured orthorhombic pseudobrookite with small amounts of excess hematite and rutile. The dielectric constant decreased with frequency and temperature for both compacts and bulk samples. Higher values were determined for bulk samples also reflecting the influence of sample composition. Change in the dielectric loss also reflected the influence of sample composition showing one maximum at high frequencies for compacts, and two maxima at room temperature for bulk samples. Complex impedance was analyzed using equivalent circuits and showed in the case of compacts the influence of both grain and grain boundary components, while in the case of bulk samples the dominant influence of grain boundaries. The temperature dependence of the determined grain and grain boundary resistance for compacts and grain boundary resistance for bulk samples was analyzed using the adiabatic small polaron hopping model enabling determination of activation energies for conduction, while the temperature dependence of relaxation times enabled determination of activation energies for relaxation. Changes in electrical conductivity for compacts and bulk samples followed Jonscher's power law. The change of the determined frequency constant with temperature showed that at elevated temperatures the quantum mechanical-tunneling model for the case of small polaron hopping explains the conduction mechanism occurring in both compacts and bulk samples.
PB  - Springer, Dordrecht
T2  - Journal of Materials Science-Materials in Electronics
T1  - Dielectric properties, complex impedance and electrical conductivity of Fe2TiO5 nanopowder compacts and bulk samples at elevated temperatures
EP  - 4806
IS  - 6
SP  - 4796
VL  - 28
DO  - 10.1007/s10854-016-6125-6
ER  - 

@article{
author = "Nikolić, M.V. and Sekulić, D.L. and Vasiljević, Zorka and Luković, M.D. and Pavlović, Vladimir and Aleksić, O.S.",
year = "2017",
abstract = "In this work we have investigated changes in dielectric properties, electrical conductivity and complex impedance of Fe2TiO5 nanopowder compacts and bulk samples as a function of elevated temperature (room to 423 K compacts, to 443 K bulk samples), frequency (100 Hz-1 MHz) and composition (starting molar ratio of Fe2O3 and TiO2 1:1-PSB11 and 1:1.5-PSB115). XRD, SEM and TEM analysis of PSB11 and PSB115 powders obtained by a simple solid state process from starting hematite and anatase nanopowders confirmed the formation of nanostructured orthorhombic pseudobrookite with small amounts of excess hematite and rutile. The dielectric constant decreased with frequency and temperature for both compacts and bulk samples. Higher values were determined for bulk samples also reflecting the influence of sample composition. Change in the dielectric loss also reflected the influence of sample composition showing one maximum at high frequencies for compacts, and two maxima at room temperature for bulk samples. Complex impedance was analyzed using equivalent circuits and showed in the case of compacts the influence of both grain and grain boundary components, while in the case of bulk samples the dominant influence of grain boundaries. The temperature dependence of the determined grain and grain boundary resistance for compacts and grain boundary resistance for bulk samples was analyzed using the adiabatic small polaron hopping model enabling determination of activation energies for conduction, while the temperature dependence of relaxation times enabled determination of activation energies for relaxation. Changes in electrical conductivity for compacts and bulk samples followed Jonscher's power law. The change of the determined frequency constant with temperature showed that at elevated temperatures the quantum mechanical-tunneling model for the case of small polaron hopping explains the conduction mechanism occurring in both compacts and bulk samples.",
publisher = "Springer, Dordrecht",
journal = "Journal of Materials Science-Materials in Electronics",
title = "Dielectric properties, complex impedance and electrical conductivity of Fe2TiO5 nanopowder compacts and bulk samples at elevated temperatures",
pages = "4806-4796",
number = "6",
volume = "28",
doi = "10.1007/s10854-016-6125-6"
}

Nikolić, M.V., Sekulić, D.L., Vasiljević, Z., Luković, M.D., Pavlović, V.,& Aleksić, O.S.. (2017). Dielectric properties, complex impedance and electrical conductivity of Fe2TiO5 nanopowder compacts and bulk samples at elevated temperatures. in Journal of Materials Science-Materials in Electronics
Springer, Dordrecht., 28(6), 4796-4806.
https://doi.org/10.1007/s10854-016-6125-6

Nikolić M, Sekulić D, Vasiljević Z, Luković M, Pavlović V, Aleksić O. Dielectric properties, complex impedance and electrical conductivity of Fe2TiO5 nanopowder compacts and bulk samples at elevated temperatures. in Journal of Materials Science-Materials in Electronics. 2017;28(6):4796-4806.
doi:10.1007/s10854-016-6125-6 .

Nikolić, M.V., Sekulić, D.L., Vasiljević, Zorka, Luković, M.D., Pavlović, Vladimir, Aleksić, O.S., "Dielectric properties, complex impedance and electrical conductivity of Fe2TiO5 nanopowder compacts and bulk samples at elevated temperatures" in Journal of Materials Science-Materials in Electronics, 28, no. 6 (2017):4796-4806,
https://doi.org/10.1007/s10854-016-6125-6 . .

TY  - JOUR
AU  - Labus, Nebojša
AU  - Vasiljević, Zorka
AU  - Aleksić, Obrad
AU  - Luković, Miloljub
AU  - Marković, Smilja
AU  - Pavlović, Vladimir
AU  - Mentus, Slavko
AU  - Nikolić, Maria Vesna
PY  - 2017
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4432
AB  - Commercial Mn-Zn powder (Mn0.63Zn0.37Fe2O4, 93 wt. % and Fe2O3 7 wt. %) was milled 0.5, 1, 2 and 4 hours in a planetary ball mill. The goal was to observe intensive milling influences on oxidation and reduction processes that will happen during subsequent heating. Powders were characterized with XRD, SEM and particle seizer. Subsequent heating was monitored on TGA/DTA in an air atmosphere. After compaction of the milled powders, sintering was also performed in a dilatometric device. Sintered specimens were characterized micro structurally with SEM on a fresh breakage. Obtained differential TGA diagrams suggest intensive changes during prolonged milling of the oxidation kinetics on heating. Ferrite powders changed with milling as well as with second run heating were characterized to enable determination of the potentially best ratio of milling and heating to be applied to obtain the desired microstructure.
PB  - Međunarodni Institut za nauku o sinterovanju, Beograd
T2  - Science of Sintering
T1  - Characterisation of Mn0.63Zn0.37Fe2O4 Powders After Intensive Milling and Subsequent Thermal Treatment
EP  - 467
IS  - 4
SP  - 455
VL  - 49
DO  - 10.2298/SOS1704455L
ER  - 

@article{
author = "Labus, Nebojša and Vasiljević, Zorka and Aleksić, Obrad and Luković, Miloljub and Marković, Smilja and Pavlović, Vladimir and Mentus, Slavko and Nikolić, Maria Vesna",
year = "2017",
abstract = "Commercial Mn-Zn powder (Mn0.63Zn0.37Fe2O4, 93 wt. % and Fe2O3 7 wt. %) was milled 0.5, 1, 2 and 4 hours in a planetary ball mill. The goal was to observe intensive milling influences on oxidation and reduction processes that will happen during subsequent heating. Powders were characterized with XRD, SEM and particle seizer. Subsequent heating was monitored on TGA/DTA in an air atmosphere. After compaction of the milled powders, sintering was also performed in a dilatometric device. Sintered specimens were characterized micro structurally with SEM on a fresh breakage. Obtained differential TGA diagrams suggest intensive changes during prolonged milling of the oxidation kinetics on heating. Ferrite powders changed with milling as well as with second run heating were characterized to enable determination of the potentially best ratio of milling and heating to be applied to obtain the desired microstructure.",
publisher = "Međunarodni Institut za nauku o sinterovanju, Beograd",
journal = "Science of Sintering",
title = "Characterisation of Mn0.63Zn0.37Fe2O4 Powders After Intensive Milling and Subsequent Thermal Treatment",
pages = "467-455",
number = "4",
volume = "49",
doi = "10.2298/SOS1704455L"
}

Labus, N., Vasiljević, Z., Aleksić, O., Luković, M., Marković, S., Pavlović, V., Mentus, S.,& Nikolić, M. V.. (2017). Characterisation of Mn0.63Zn0.37Fe2O4 Powders After Intensive Milling and Subsequent Thermal Treatment. in Science of Sintering
Međunarodni Institut za nauku o sinterovanju, Beograd., 49(4), 455-467.
https://doi.org/10.2298/SOS1704455L

Labus N, Vasiljević Z, Aleksić O, Luković M, Marković S, Pavlović V, Mentus S, Nikolić MV. Characterisation of Mn0.63Zn0.37Fe2O4 Powders After Intensive Milling and Subsequent Thermal Treatment. in Science of Sintering. 2017;49(4):455-467.
doi:10.2298/SOS1704455L .

Labus, Nebojša, Vasiljević, Zorka, Aleksić, Obrad, Luković, Miloljub, Marković, Smilja, Pavlović, Vladimir, Mentus, Slavko, Nikolić, Maria Vesna, "Characterisation of Mn0.63Zn0.37Fe2O4 Powders After Intensive Milling and Subsequent Thermal Treatment" in Science of Sintering, 49, no. 4 (2017):455-467,
https://doi.org/10.2298/SOS1704455L . .

TY  - CONF
AU  - Labus, Nebojša
AU  - Vasiljević, Zorka Ž.
AU  - Aleksić, Obrad S.
AU  - Vuković, Miloljub
AU  - Marković, Smilja
AU  - Pavlović, Vladimir B.
AU  - Mentus, Slavko
AU  - Nikolić, Maria Vesna
PY  - 2016
UR  - http://dais.sanu.ac.rs/123456789/869
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/5713
AB  - Commercial Mn-Zn powder (Mn0.63Zn0.37Fe2O4, 93 wt. % and Fe2O3 7 wt. %) was milled 0.5, 1, 2 and 4 hours in a planetary ball mill. Powders were characterized with XRD, SEM and particle seizer. Subsequent heating was monitored on TGA/DTA in air atmosphere. After compaction of the milled powders, sintering was also performed in a dilatometric device. Sintered specimens were characterized microstructurally with SEM on a fresh breakage. Ferrite powders changed with milling as well as with second run heating are characterised to approach the possible best ratio of the milling and heating that should be used to obtain desired micrstructure.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts : V Serbian Ceramic Society Conference, Sep 21-23 September 2016, Belgrade
T1  - Characterisation of Mn0.63Zn0.37Fe2O4 powders after intensive milling and subsequent thermal treatment
EP  - 48
SP  - 48
UR  - https://hdl.handle.net/21.15107/rcub_dais_869
ER  - 

@conference{
author = "Labus, Nebojša and Vasiljević, Zorka Ž. and Aleksić, Obrad S. and Vuković, Miloljub and Marković, Smilja and Pavlović, Vladimir B. and Mentus, Slavko and Nikolić, Maria Vesna",
year = "2016",
abstract = "Commercial Mn-Zn powder (Mn0.63Zn0.37Fe2O4, 93 wt. % and Fe2O3 7 wt. %) was milled 0.5, 1, 2 and 4 hours in a planetary ball mill. Powders were characterized with XRD, SEM and particle seizer. Subsequent heating was monitored on TGA/DTA in air atmosphere. After compaction of the milled powders, sintering was also performed in a dilatometric device. Sintered specimens were characterized microstructurally with SEM on a fresh breakage. Ferrite powders changed with milling as well as with second run heating are characterised to approach the possible best ratio of the milling and heating that should be used to obtain desired micrstructure.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts : V Serbian Ceramic Society Conference, Sep 21-23 September 2016, Belgrade",
title = "Characterisation of Mn0.63Zn0.37Fe2O4 powders after intensive milling and subsequent thermal treatment",
pages = "48-48",
url = "https://hdl.handle.net/21.15107/rcub_dais_869"
}

Labus, N., Vasiljević, Z. Ž., Aleksić, O. S., Vuković, M., Marković, S., Pavlović, V. B., Mentus, S.,& Nikolić, M. V.. (2016). Characterisation of Mn0.63Zn0.37Fe2O4 powders after intensive milling and subsequent thermal treatment. in Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts : V Serbian Ceramic Society Conference, Sep 21-23 September 2016, Belgrade
Belgrade : Serbian Ceramic Society., 48-48.
https://hdl.handle.net/21.15107/rcub_dais_869

Labus N, Vasiljević ZŽ, Aleksić OS, Vuković M, Marković S, Pavlović VB, Mentus S, Nikolić MV. Characterisation of Mn0.63Zn0.37Fe2O4 powders after intensive milling and subsequent thermal treatment. in Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts : V Serbian Ceramic Society Conference, Sep 21-23 September 2016, Belgrade. 2016;:48-48.
https://hdl.handle.net/21.15107/rcub_dais_869 .

Labus, Nebojša, Vasiljević, Zorka Ž., Aleksić, Obrad S., Vuković, Miloljub, Marković, Smilja, Pavlović, Vladimir B., Mentus, Slavko, Nikolić, Maria Vesna, "Characterisation of Mn0.63Zn0.37Fe2O4 powders after intensive milling and subsequent thermal treatment" in Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts : V Serbian Ceramic Society Conference, Sep 21-23 September 2016, Belgrade (2016):48-48,
https://hdl.handle.net/21.15107/rcub_dais_869 .

TY  - JOUR
AU  - Vujković, Milica J.
AU  - Vidoeski, Bojan A.
AU  - Jovanović, Svetlana P.
AU  - Bajuk-Bogdanović, Danica
AU  - Budimir, Milica D.
AU  - Marković, Zoran M.
AU  - Pavlović, Vladimir
AU  - Todorović-Marković, Biljana
AU  - Holclajtner-Antunović, Ivanka
PY  - 2016
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4097
AB  - A novel electrochemically exfoliated graphene-molybdophosphoric acid nanohybride (EG-MoPA) was prepared via a simple method. Both scanning electron (SEM) and atomic force microscopy (AFM) results show that MoPA clusters are attached to the surfaces of graphene sheets. By changing the mass ratio of EG-MoPA, the morphology of nanohybrid itself can be significantly modulated, from mostly flat graphene like structure at low amount of MoPA to very uneven, wavy surfaces when MoPA is present in higher concentration. The Raman and Fourier transform infra red (FTIR) spectra in conjunction with electrochemical results indicate that strong interaction exists between the components of nanohybride based on charge transfer and electrostatic interaction of graphene sheets and MoPA. The electrochemical performances are improved by synergetic effect of reversible redox properties of MoPA and the double layer capacitance of a high-surface area of the obtained nanohybrides. The higher current capability of EG was achieved by anchoring the small MoPA concentration on the graphene support. The strong bonding of EG with the MoPA prevents acid to dissolve in the electrolyte upon cycling, enabling the stable capacitance behaviour of the low-doped EG sample. The capacitance for the EG doped with the high amount of MoPA was found to be much larger than for EG. However, the obtained capacitance decreases at the beginning of cycling due to the dissolution of excessive amount of surface MoPA, weakly bonded to the graphene support.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Electrochimica Acta
T1  - Synthesis and characterization of electrochemically exfoliated graphene-molybdophosphate hybrid materials for charge storage devices
EP  - 46
SP  - 34
VL  - 217
DO  - 10.1016/j.electacta.2016.09.067
ER  - 

@article{
author = "Vujković, Milica J. and Vidoeski, Bojan A. and Jovanović, Svetlana P. and Bajuk-Bogdanović, Danica and Budimir, Milica D. and Marković, Zoran M. and Pavlović, Vladimir and Todorović-Marković, Biljana and Holclajtner-Antunović, Ivanka",
year = "2016",
abstract = "A novel electrochemically exfoliated graphene-molybdophosphoric acid nanohybride (EG-MoPA) was prepared via a simple method. Both scanning electron (SEM) and atomic force microscopy (AFM) results show that MoPA clusters are attached to the surfaces of graphene sheets. By changing the mass ratio of EG-MoPA, the morphology of nanohybrid itself can be significantly modulated, from mostly flat graphene like structure at low amount of MoPA to very uneven, wavy surfaces when MoPA is present in higher concentration. The Raman and Fourier transform infra red (FTIR) spectra in conjunction with electrochemical results indicate that strong interaction exists between the components of nanohybride based on charge transfer and electrostatic interaction of graphene sheets and MoPA. The electrochemical performances are improved by synergetic effect of reversible redox properties of MoPA and the double layer capacitance of a high-surface area of the obtained nanohybrides. The higher current capability of EG was achieved by anchoring the small MoPA concentration on the graphene support. The strong bonding of EG with the MoPA prevents acid to dissolve in the electrolyte upon cycling, enabling the stable capacitance behaviour of the low-doped EG sample. The capacitance for the EG doped with the high amount of MoPA was found to be much larger than for EG. However, the obtained capacitance decreases at the beginning of cycling due to the dissolution of excessive amount of surface MoPA, weakly bonded to the graphene support.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Electrochimica Acta",
title = "Synthesis and characterization of electrochemically exfoliated graphene-molybdophosphate hybrid materials for charge storage devices",
pages = "46-34",
volume = "217",
doi = "10.1016/j.electacta.2016.09.067"
}

Vujković, M. J., Vidoeski, B. A., Jovanović, S. P., Bajuk-Bogdanović, D., Budimir, M. D., Marković, Z. M., Pavlović, V., Todorović-Marković, B.,& Holclajtner-Antunović, I.. (2016). Synthesis and characterization of electrochemically exfoliated graphene-molybdophosphate hybrid materials for charge storage devices. in Electrochimica Acta
Pergamon-Elsevier Science Ltd, Oxford., 217, 34-46.
https://doi.org/10.1016/j.electacta.2016.09.067

Vujković MJ, Vidoeski BA, Jovanović SP, Bajuk-Bogdanović D, Budimir MD, Marković ZM, Pavlović V, Todorović-Marković B, Holclajtner-Antunović I. Synthesis and characterization of electrochemically exfoliated graphene-molybdophosphate hybrid materials for charge storage devices. in Electrochimica Acta. 2016;217:34-46.
doi:10.1016/j.electacta.2016.09.067 .

Vujković, Milica J., Vidoeski, Bojan A., Jovanović, Svetlana P., Bajuk-Bogdanović, Danica, Budimir, Milica D., Marković, Zoran M., Pavlović, Vladimir, Todorović-Marković, Biljana, Holclajtner-Antunović, Ivanka, "Synthesis and characterization of electrochemically exfoliated graphene-molybdophosphate hybrid materials for charge storage devices" in Electrochimica Acta, 217 (2016):34-46,
https://doi.org/10.1016/j.electacta.2016.09.067 . .

TY  - CONF
AU  - Vasiljević, Zorka Ž.
AU  - Aleksić, Obrad S.
AU  - Luković, Miloljub D.
AU  - Vujković, Milica
AU  - Pavlović, Vladimir B.
AU  - Labus, Nebojša
AU  - Nikolić, Maria Vesna
PY  - 2016
UR  - http://dais.sanu.ac.rs/123456789/893
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/5718
AB  - Pseudobrookite paste was composed of a mixture of starting nanopowders of hematite (α-Fe2O3) and anatase (TiO2) in the molar ratio 1:1.5, organic vehicle and glass frit. The paste was screen printed on on fluorine-doped tin oxide (FTO) glass substrate using screen printing technology. Structural, morphological and optical studies have been carried out using X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and transmission electron microscopy (TEM). The photo-electrochemical performance of Fe2TiO5 screen printed thick film was examined under xenon lamp illumination in 1 M NaOH electrolyte.
PB  - Belgrade : Institute of Technical Sciences of the Serbian Academz of Sciences and Arts
C3  - Program and the Book of Abstracts / Fifteenth Young Researchers' Conference Materials Sciences and Engineering, December 7-9, 2016, Belgrade
T1  - Fabrication, characterization and photoelectrochemical behavior of Fe2TiO5 screen printed thick films
EP  - 45
SP  - 45
UR  - https://hdl.handle.net/21.15107/rcub_dais_893
ER  - 

@conference{
author = "Vasiljević, Zorka Ž. and Aleksić, Obrad S. and Luković, Miloljub D. and Vujković, Milica and Pavlović, Vladimir B. and Labus, Nebojša and Nikolić, Maria Vesna",
year = "2016",
abstract = "Pseudobrookite paste was composed of a mixture of starting nanopowders of hematite (α-Fe2O3) and anatase (TiO2) in the molar ratio 1:1.5, organic vehicle and glass frit. The paste was screen printed on on fluorine-doped tin oxide (FTO) glass substrate using screen printing technology. Structural, morphological and optical studies have been carried out using X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and transmission electron microscopy (TEM). The photo-electrochemical performance of Fe2TiO5 screen printed thick film was examined under xenon lamp illumination in 1 M NaOH electrolyte.",
publisher = "Belgrade : Institute of Technical Sciences of the Serbian Academz of Sciences and Arts",
journal = "Program and the Book of Abstracts / Fifteenth Young Researchers' Conference Materials Sciences and Engineering, December 7-9, 2016, Belgrade",
title = "Fabrication, characterization and photoelectrochemical behavior of Fe2TiO5 screen printed thick films",
pages = "45-45",
url = "https://hdl.handle.net/21.15107/rcub_dais_893"
}

Vasiljević, Z. Ž., Aleksić, O. S., Luković, M. D., Vujković, M., Pavlović, V. B., Labus, N.,& Nikolić, M. V.. (2016). Fabrication, characterization and photoelectrochemical behavior of Fe2TiO5 screen printed thick films. in Program and the Book of Abstracts / Fifteenth Young Researchers' Conference Materials Sciences and Engineering, December 7-9, 2016, Belgrade
Belgrade : Institute of Technical Sciences of the Serbian Academz of Sciences and Arts., 45-45.
https://hdl.handle.net/21.15107/rcub_dais_893

Vasiljević ZŽ, Aleksić OS, Luković MD, Vujković M, Pavlović VB, Labus N, Nikolić MV. Fabrication, characterization and photoelectrochemical behavior of Fe2TiO5 screen printed thick films. in Program and the Book of Abstracts / Fifteenth Young Researchers' Conference Materials Sciences and Engineering, December 7-9, 2016, Belgrade. 2016;:45-45.
https://hdl.handle.net/21.15107/rcub_dais_893 .

Vasiljević, Zorka Ž., Aleksić, Obrad S., Luković, Miloljub D., Vujković, Milica, Pavlović, Vladimir B., Labus, Nebojša, Nikolić, Maria Vesna, "Fabrication, characterization and photoelectrochemical behavior of Fe2TiO5 screen printed thick films" in Program and the Book of Abstracts / Fifteenth Young Researchers' Conference Materials Sciences and Engineering, December 7-9, 2016, Belgrade (2016):45-45,
https://hdl.handle.net/21.15107/rcub_dais_893 .

TY  - JOUR
AU  - Nikolić, M.V.
AU  - Sekulić, D.L.
AU  - Nikolić, N.
AU  - Slankamenac, M.P.
AU  - Aleksić, O.S.
AU  - Danninger, H.
AU  - Halwax, E.
AU  - Pavlović, Vladimir
AU  - Nikolić, P.M.
PY  - 2013
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3106
AB  - In this work we have analyzed the effects of Ti doping on structural and electrical properties of alpha-Fe2O3. When the amount of added Ti (5 wt.% TiO2) was within the solubility degree and XRD, SEM and EDS analysis revealed a homogenous hematite structure, with lattice parameters a= 5.03719(3), c= 13.7484(1) slightly increased due to incorporation of Ti into the rhombohedral hematite lattice. Higher amounts of Ti (10 wt.% TiO2) resulted in the formation of pseudobrookite, besides hematite, confirmed by SEM and EDS analysis. Studies of electric properties in the temperature range 25-225oC at different frequencies (100-1Mz) showed that Ti doping improved electrical conductivity. Impedance analysis was performed using an equivalent circuit, showing one relaxation process and suggesting dominant grain boundary contribution.
PB  - Međunarodni Institut za nauku o sinterovanju, Beograd
T2  - Science of Sintering
T1  - Structural and Electrical Properties of Ti Doped alpha-Fe2O3
EP  - 292
IS  - 3
SP  - 281
VL  - 45
DO  - 10.2298/SOS1303281N
ER  - 

@article{
author = "Nikolić, M.V. and Sekulić, D.L. and Nikolić, N. and Slankamenac, M.P. and Aleksić, O.S. and Danninger, H. and Halwax, E. and Pavlović, Vladimir and Nikolić, P.M.",
year = "2013",
abstract = "In this work we have analyzed the effects of Ti doping on structural and electrical properties of alpha-Fe2O3. When the amount of added Ti (5 wt.% TiO2) was within the solubility degree and XRD, SEM and EDS analysis revealed a homogenous hematite structure, with lattice parameters a= 5.03719(3), c= 13.7484(1) slightly increased due to incorporation of Ti into the rhombohedral hematite lattice. Higher amounts of Ti (10 wt.% TiO2) resulted in the formation of pseudobrookite, besides hematite, confirmed by SEM and EDS analysis. Studies of electric properties in the temperature range 25-225oC at different frequencies (100-1Mz) showed that Ti doping improved electrical conductivity. Impedance analysis was performed using an equivalent circuit, showing one relaxation process and suggesting dominant grain boundary contribution.",
publisher = "Međunarodni Institut za nauku o sinterovanju, Beograd",
journal = "Science of Sintering",
title = "Structural and Electrical Properties of Ti Doped alpha-Fe2O3",
pages = "292-281",
number = "3",
volume = "45",
doi = "10.2298/SOS1303281N"
}

Nikolić, M.V., Sekulić, D.L., Nikolić, N., Slankamenac, M.P., Aleksić, O.S., Danninger, H., Halwax, E., Pavlović, V.,& Nikolić, P.M.. (2013). Structural and Electrical Properties of Ti Doped alpha-Fe2O3. in Science of Sintering
Međunarodni Institut za nauku o sinterovanju, Beograd., 45(3), 281-292.
https://doi.org/10.2298/SOS1303281N

Nikolić M, Sekulić D, Nikolić N, Slankamenac M, Aleksić O, Danninger H, Halwax E, Pavlović V, Nikolić P. Structural and Electrical Properties of Ti Doped alpha-Fe2O3. in Science of Sintering. 2013;45(3):281-292.
doi:10.2298/SOS1303281N .

Nikolić, M.V., Sekulić, D.L., Nikolić, N., Slankamenac, M.P., Aleksić, O.S., Danninger, H., Halwax, E., Pavlović, Vladimir, Nikolić, P.M., "Structural and Electrical Properties of Ti Doped alpha-Fe2O3" in Science of Sintering, 45, no. 3 (2013):281-292,
https://doi.org/10.2298/SOS1303281N . .

TY  - JOUR
AU  - Nikolić, M.V.
AU  - Slankamenac, M.P.
AU  - Nikolić, N.
AU  - Sekulić, D.L.
AU  - Aleksić, O.S.
AU  - Mitrić, M.
AU  - Ivetić, T.
AU  - Pavlović, Vladimir
AU  - Nikolić, P.M.
PY  - 2012
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/3049
AB  - The effects of Zn-doping on the dielectric behavior and electrical properties of bulk alpha-Fe2O3 have been studied. X-ray diffraction analysis revealed the presence of two phases in all samples: hematite and spinel ZnFe2O4, with the amount of spinel phase increasing with increasing Zn content. Scanning electron microscopy analysis combined with energy dispersive X-ray spectroscopy showed that the Zn-bearing phase occurred in the form of individual spinel ZnFe2O4 grains in a hematite matrix. DC conductivity was measured in the temperature range 25-225 degrees C (298-498 K). Impedance spectroscopy measurements in the same temperature range were carried out in the frequency range 100Hz to 10 MHz. Increase in the Zn content resulted in increased electrical conductivity and higher values of the dielectric constant. The resistance and capacitance of grains and grain boundaries were analyzed by modeling the experimental results using an equivalent circuit.
PB  - Međunarodni Institut za nauku o sinterovanju, Beograd
T2  - Science of Sintering
T1  - Study of Dielectric Behavior and Electrical Properties of Hematite alpha-Fe2O3 Doped with Zn
EP  - 321
IS  - 3
SP  - 307
VL  - 44
DO  - 10.2298/SOS1203307N
ER  - 

@article{
author = "Nikolić, M.V. and Slankamenac, M.P. and Nikolić, N. and Sekulić, D.L. and Aleksić, O.S. and Mitrić, M. and Ivetić, T. and Pavlović, Vladimir and Nikolić, P.M.",
year = "2012",
abstract = "The effects of Zn-doping on the dielectric behavior and electrical properties of bulk alpha-Fe2O3 have been studied. X-ray diffraction analysis revealed the presence of two phases in all samples: hematite and spinel ZnFe2O4, with the amount of spinel phase increasing with increasing Zn content. Scanning electron microscopy analysis combined with energy dispersive X-ray spectroscopy showed that the Zn-bearing phase occurred in the form of individual spinel ZnFe2O4 grains in a hematite matrix. DC conductivity was measured in the temperature range 25-225 degrees C (298-498 K). Impedance spectroscopy measurements in the same temperature range were carried out in the frequency range 100Hz to 10 MHz. Increase in the Zn content resulted in increased electrical conductivity and higher values of the dielectric constant. The resistance and capacitance of grains and grain boundaries were analyzed by modeling the experimental results using an equivalent circuit.",
publisher = "Međunarodni Institut za nauku o sinterovanju, Beograd",
journal = "Science of Sintering",
title = "Study of Dielectric Behavior and Electrical Properties of Hematite alpha-Fe2O3 Doped with Zn",
pages = "321-307",
number = "3",
volume = "44",
doi = "10.2298/SOS1203307N"
}

Nikolić, M.V., Slankamenac, M.P., Nikolić, N., Sekulić, D.L., Aleksić, O.S., Mitrić, M., Ivetić, T., Pavlović, V.,& Nikolić, P.M.. (2012). Study of Dielectric Behavior and Electrical Properties of Hematite alpha-Fe2O3 Doped with Zn. in Science of Sintering
Međunarodni Institut za nauku o sinterovanju, Beograd., 44(3), 307-321.
https://doi.org/10.2298/SOS1203307N

Nikolić M, Slankamenac M, Nikolić N, Sekulić D, Aleksić O, Mitrić M, Ivetić T, Pavlović V, Nikolić P. Study of Dielectric Behavior and Electrical Properties of Hematite alpha-Fe2O3 Doped with Zn. in Science of Sintering. 2012;44(3):307-321.
doi:10.2298/SOS1203307N .

Nikolić, M.V., Slankamenac, M.P., Nikolić, N., Sekulić, D.L., Aleksić, O.S., Mitrić, M., Ivetić, T., Pavlović, Vladimir, Nikolić, P.M., "Study of Dielectric Behavior and Electrical Properties of Hematite alpha-Fe2O3 Doped with Zn" in Science of Sintering, 44, no. 3 (2012):307-321,
https://doi.org/10.2298/SOS1203307N . .