Structural and Electrical Properties of Ti Doped alpha-Fe2O3

2013
Authors
Nikolić, M.V.Sekulić, D.L.
Nikolić, N.
Slankamenac, M.P.
Aleksić, O.S.
Danninger, H.
Halwax, E.
Pavlović, Vladimir

Nikolić, P.M.
Article (Published version)
Metadata
Show full item recordAbstract
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.
Keywords:
X-ray diffraction / Scanning electron microscopy / Electric propertiesSource:
Science of Sintering, 2013, 45, 3, 281-292Publisher:
- Međunarodni Institut za nauku o sinterovanju, Beograd
Funding / projects:
- Lithium-ion batteries and fuel cells - research and development (RS-45014)
- Development of the methods, sensors and systems for monitoring quality of water, air and soil (RS-43008)
DOI: 10.2298/SOS1303281N
ISSN: 0350-820X
WoS: 000339449200005
Scopus: 2-s2.0-84893417241
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Poljoprivredni fakultetTY - 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 . .