Journal of Physical Studies 7(3), 313–317 (2003) DOI: https://doi.org/10.30970/jps.07.313 CURRENT LIMITING EFFECT IN In2O3–SrO CERAMICS A. Bondarchuk, A. Glot1, G. Behr2, J. Werner2 Dnipropetrovsk National University, 13, Naukovyi, Dnipropetrovsk, 49050, Ukraine 1Technological University of Mixteca, Huajuapan, Oaxaca, Mexico (Universidad Tecnologica de la Mixteca, Huajuapan de Leon, Oaxaca, Mexico) 2Institute of Solid State and Materials Science, Postbox D–01171 Dresden, Germany (Institut für Festkörper- u. Werkstofforschung IFW Dresden, Postfach 270016, D–01171 Dresden, Deutschland)

The effect of current limiting at voltage-current characteristic of indium dioxide based ceramics In$_{2}$O$_{3}$-SrO is observed. Сurrent limiting region is acompanied by the rise of bulk resístanse as well as resístanse of electrode-ceramics interface. The heat treatment of ceramics in inert gaseous environment stimulate the appearance of mentioned effect and leads to the increase of electrical conductivity of material. The current limiting effect is related to physical processes in the vicinity of potential barriers at grain boundaries in the bulk and at the electrode-ceramics interface which control the electrical conduction of the studied material.

PACS number(s): 72.20.$-$i, 73.30.+y

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