TY  - JOUR
AU  - Paunović, Vesna
AU  - Mitić, Vojislav
AU  - Pavlović, Vladimir
AU  - Miljković, Miroslav
AU  - Živković, Ljiljana
PY  - 2010
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/2350
AB  - La/Mn codoped BaTiO3 with different La2O3 content, ranging from 0.1 to 5.0 at% La, was investigated regarding their microstructural and dielectric characteristics. The content of 0.05 at% Mn was constant in all investigated samples. The samples were sintered at 1320°C and 1350°C for two hours. Microstructural studies were done using SEM and EDS analysis. The fine-grained microstructure was obtained even for low content of La. The appearance of secondary abnormal grains with serrated features along grain boundaries was observed in 1.0 at% La-BaTiO3 sintered at 1350°C. Nearly flat permittivity-temperature response was obtained in specimens with 2.0 and 5.0 at% La. Using the modified Curie-Weiss law a critical exponent γ and C' were calculated. The obtained values of γ pointed out the diffuse phase transformation in heavily doped BaTiO3 and great departure from the Curie-Weiss law for low doped ceramics.
PB  - Univerzitet u Novom Sadu - Tehnološki fakultet, Novi Sad
T2  - Processing and Application of Ceramics
T1  - Microstructure evolution and phase transition in La/Mn doped barium titanate ceramics
EP  - 258
IS  - 4
SP  - 253
VL  - 4
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_2350
ER  - 

@article{
author = "Paunović, Vesna and Mitić, Vojislav and Pavlović, Vladimir and Miljković, Miroslav and Živković, Ljiljana",
year = "2010",
abstract = "La/Mn codoped BaTiO3 with different La2O3 content, ranging from 0.1 to 5.0 at% La, was investigated regarding their microstructural and dielectric characteristics. The content of 0.05 at% Mn was constant in all investigated samples. The samples were sintered at 1320°C and 1350°C for two hours. Microstructural studies were done using SEM and EDS analysis. The fine-grained microstructure was obtained even for low content of La. The appearance of secondary abnormal grains with serrated features along grain boundaries was observed in 1.0 at% La-BaTiO3 sintered at 1350°C. Nearly flat permittivity-temperature response was obtained in specimens with 2.0 and 5.0 at% La. Using the modified Curie-Weiss law a critical exponent γ and C' were calculated. The obtained values of γ pointed out the diffuse phase transformation in heavily doped BaTiO3 and great departure from the Curie-Weiss law for low doped ceramics.",
publisher = "Univerzitet u Novom Sadu - Tehnološki fakultet, Novi Sad",
journal = "Processing and Application of Ceramics",
title = "Microstructure evolution and phase transition in La/Mn doped barium titanate ceramics",
pages = "258-253",
number = "4",
volume = "4",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_2350"
}

Paunović, V., Mitić, V., Pavlović, V., Miljković, M.,& Živković, L.. (2010). Microstructure evolution and phase transition in La/Mn doped barium titanate ceramics. in Processing and Application of Ceramics
Univerzitet u Novom Sadu - Tehnološki fakultet, Novi Sad., 4(4), 253-258.
https://hdl.handle.net/21.15107/rcub_agrospace_2350

Paunović V, Mitić V, Pavlović V, Miljković M, Živković L. Microstructure evolution and phase transition in La/Mn doped barium titanate ceramics. in Processing and Application of Ceramics. 2010;4(4):253-258.
https://hdl.handle.net/21.15107/rcub_agrospace_2350 .

Paunović, Vesna, Mitić, Vojislav, Pavlović, Vladimir, Miljković, Miroslav, Živković, Ljiljana, "Microstructure evolution and phase transition in La/Mn doped barium titanate ceramics" in Processing and Application of Ceramics, 4, no. 4 (2010):253-258,
https://hdl.handle.net/21.15107/rcub_agrospace_2350 .

TY  - JOUR
AU  - Pavlović, Vera P.
AU  - Stojanović, Biljana D.
AU  - Pavlović, Vladimir
AU  - Živković, Ljiljana M.
AU  - Ristić, Momčilo M.
PY  - 2002
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/366
AB  - In this article low temperature sintering of mechanically activated BaCO3-TiO2 system was studied. A stoichiometric mixture of BaCO3 and TiO2 powders was mechanically activated in a high-energy vibromill for 0, 30, 90 and 180 min, calcined at 800oC for 1 h and reaction sintered at 1100oC and 1200oC for 2 h (heating rate of 10oC/min). Phase compositions and crystallographic data of initial, activated, calcinated and sintered specimens were obtained by the XRPD method. It was noticed that mechanical activation enhanced and lowered the temperature of the formation of tetragonal BaTiO3. Scanning electron microscopy was used to study and characterize microstructures of the samples.
AB  - U ovome radu je proučavano niskotemperaturno sinterovanje mehanički aktiviranog sistema BaCO3-TiO2. Prah BaCO3 i TiO2 u stehiometrijskom odnosu je mehanički aktiviran u visokoenergetskom vibracionom mlinu tokom 0, 30, 90 i 180 min, kalcinisan na 800oC tokom jednog časa i reakciono sinterovan na 1100 i 1200oC tokom dva časa (brzina zagrevanja je iznosila 10oC/min). Fazni sastav i kristalografski podaci početnih i aktiviranih smesa, kao i kalcinisanih i sinterovanih uzoraka dobijeni su rendgenskom metodom. Skanirajućom elektronskom mikroskopijom proučena je mikrostruktura uzoraka. Utvrđeno je da mehanička aktivacija ubrzava proces sinterovanja, uz snižavanje temperature formiranja tetragonalnog barijum-titanata.
PB  - Međunarodni Institut za nauku o sinterovanju, Beograd
T2  - Science of Sintering
T1  - Low temperature sintering of mechanically activated BaCO3-TiO2
EP  - 77
IS  - 1
SP  - 73
VL  - 34
DO  - 10.2298/SOS0201073P
ER  - 

@article{
author = "Pavlović, Vera P. and Stojanović, Biljana D. and Pavlović, Vladimir and Živković, Ljiljana M. and Ristić, Momčilo M.",
year = "2002",
abstract = "In this article low temperature sintering of mechanically activated BaCO3-TiO2 system was studied. A stoichiometric mixture of BaCO3 and TiO2 powders was mechanically activated in a high-energy vibromill for 0, 30, 90 and 180 min, calcined at 800oC for 1 h and reaction sintered at 1100oC and 1200oC for 2 h (heating rate of 10oC/min). Phase compositions and crystallographic data of initial, activated, calcinated and sintered specimens were obtained by the XRPD method. It was noticed that mechanical activation enhanced and lowered the temperature of the formation of tetragonal BaTiO3. Scanning electron microscopy was used to study and characterize microstructures of the samples., U ovome radu je proučavano niskotemperaturno sinterovanje mehanički aktiviranog sistema BaCO3-TiO2. Prah BaCO3 i TiO2 u stehiometrijskom odnosu je mehanički aktiviran u visokoenergetskom vibracionom mlinu tokom 0, 30, 90 i 180 min, kalcinisan na 800oC tokom jednog časa i reakciono sinterovan na 1100 i 1200oC tokom dva časa (brzina zagrevanja je iznosila 10oC/min). Fazni sastav i kristalografski podaci početnih i aktiviranih smesa, kao i kalcinisanih i sinterovanih uzoraka dobijeni su rendgenskom metodom. Skanirajućom elektronskom mikroskopijom proučena je mikrostruktura uzoraka. Utvrđeno je da mehanička aktivacija ubrzava proces sinterovanja, uz snižavanje temperature formiranja tetragonalnog barijum-titanata.",
publisher = "Međunarodni Institut za nauku o sinterovanju, Beograd",
journal = "Science of Sintering",
title = "Low temperature sintering of mechanically activated BaCO3-TiO2",
pages = "77-73",
number = "1",
volume = "34",
doi = "10.2298/SOS0201073P"
}

Pavlović, V. P., Stojanović, B. D., Pavlović, V., Živković, L. M.,& Ristić, M. M.. (2002). Low temperature sintering of mechanically activated BaCO3-TiO2. in Science of Sintering
Međunarodni Institut za nauku o sinterovanju, Beograd., 34(1), 73-77.
https://doi.org/10.2298/SOS0201073P

Pavlović VP, Stojanović BD, Pavlović V, Živković LM, Ristić MM. Low temperature sintering of mechanically activated BaCO3-TiO2. in Science of Sintering. 2002;34(1):73-77.
doi:10.2298/SOS0201073P .

Pavlović, Vera P., Stojanović, Biljana D., Pavlović, Vladimir, Živković, Ljiljana M., Ristić, Momčilo M., "Low temperature sintering of mechanically activated BaCO3-TiO2" in Science of Sintering, 34, no. 1 (2002):73-77,
https://doi.org/10.2298/SOS0201073P . .