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 properties
Source:
Science of Sintering, 2013, 45, 3, 281-292
Publisher:
Međunarodni Institut za nauku o sinterovanju, Beograd
TY - JOUR
AU - Nikolić, Maria Vesna
AU - Sekulic, Dalibor L
AU - Nikolić, Nenad
AU - Slankamenac, Milos P
AU - Aleksić, Obrad
AU - Danninger, H
AU - Halwax, E
AU - Pavlović, Vladimir B
AU - Nikolić, Pantelija M.
PY - 2013
UR - http://rimsi.imsi.bg.ac.rs/handle/123456789/657
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, Maria Vesna and Sekulic, Dalibor L and Nikolić, Nenad and Slankamenac, Milos P and Aleksić, Obrad and Danninger, H and Halwax, E and Pavlović, Vladimir B and Nikolić, Pantelija 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., Sekulic, D. L., Nikolić, N., Slankamenac, M. P., Aleksić, O., Danninger, H., Halwax, E., Pavlović, V. B.,& 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 MV, Sekulic DL, Nikolić N, Slankamenac MP, Aleksić O, Danninger H, Halwax E, Pavlović VB, Nikolić PM. Structural and Electrical Properties of Ti Doped alpha-Fe2O3. in Science of Sintering. 2013;45(3):281-292.
doi:10.2298/SOS1303281N .
Nikolić, Maria Vesna, Sekulic, Dalibor L, Nikolić, Nenad, Slankamenac, Milos P, Aleksić, Obrad, Danninger, H, Halwax, E, Pavlović, Vladimir B, Nikolić, Pantelija 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 . .
