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https://open.uns.ac.rs/handle/123456789/8260
Title: | Structural and electrical properties of Ti doped α-Fe2O3 | Authors: | Nikolić, M. Sekulić, Dalibor Nikolić, N. Slankamenac M. Aleksić O. Danninger H. Halwax E. Pavlović, V. Nikolic P. |
Issue Date: | 1-Jan-2013 | Journal: | Science of Sintering | Abstract: | In this work we have analyzed the effects of Ti doping on structural and electrical properties of α-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) Å, c=13.7484(1) Å 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 25-225°C 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. | URI: | https://open.uns.ac.rs/handle/123456789/8260 | ISSN: | 0350820X | DOI: | 10.2298/SOS1303281N |
Appears in Collections: | FTN Publikacije/Publications |
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