Effect of the Distribution of Manganese Ions on the Properties of Mn-Doped (Ba,Y)TiO3 PTCR Ceramics |
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| Authors: | O. I. V'yunov L. L. Kovalenko A. G. Belous V. N. Belyakov |
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| Affiliation: | (1) National Academy of Sciences of Ukraine, Vernadsky Institute of General and Inorganic Chemistry, pr. Akademika Palladina 32/34, Kiev-142, 03680, Ukraine |
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| Abstract: | The electrical properties and microstructure of (Ba,Y)TiO3 PTCR ceramics were studied. The results indicate that the Mn ions increase the intergranular barrier height and produce a high-resistance layer on the grain surface. The temperature-dependent resistances of the grain bulk, surface layer, and grain boundaries, the temperature coefficient of resistance, and the magnitude of the varistor effect were assessed as a function of Mn content. |
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