Abstract
Using a double-probe spreading resistance measurement technique combined with a layer-by-layer analysis, temperature dependences of electroconductivity of polycrystalline lithium pentaferrite (LPF), which is produced via a ceramic-production technological process, are investigated. It is shown that the electroconductivity activation energy of LPF is controlled by the height of grain-boundary potential barrier due to different degrees of grain boundary and grain bulk oxidation. A relationship is established between the value of the electroconductivity activation energy of LPF and the processes of its oxygen exchange with the surrounding medium during thermal annealing.
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 5, pp.48–51, May, 2006.
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Surzhikov, A.P., Frangulyan, T.S., Ghyngazov, S.A. et al. Investigation of electroconductivity of lithium pentaferrite. Russ Phys J 49, 506–510 (2006). https://doi.org/10.1007/s11182-006-0133-6
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DOI: https://doi.org/10.1007/s11182-006-0133-6