Abstract
The data of the temperature variation of the direct current electrical conductivity and Seeback voltage, X-ray diffraction patterns and infrared spectra of eighteen doped samples of γ-Fe2O3 are analysed for the effect of dopants on the hydrogen ferrite phase present in γ-Fe2O3. The contribution of hydrogen ferrite phase in doped γ-Fe2O3 containing small amounts of cobalt (0.3%), nickel (0.5%) and gadolinium (0.3%) is negligible. The concentration of negative charge carriers is large in cobalt and nickel doped γ-Fe2O3.
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Nikumbh, A.K., Rane, K.S. & Mukhedkar, A.J. Direct current electrical conductivity of doped gamma ferric oxide. J Mater Sci 18, 3415–3420 (1983). https://doi.org/10.1007/BF00544169
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DOI: https://doi.org/10.1007/BF00544169