Effect of the Manganese Valence State on the Electrical Conductivity of Barium Titanate
- 1 May 1993
- journal article
- Published by Wiley in Journal of the American Ceramic Society
- Vol. 76 (5) , 1191-1194
- https://doi.org/10.1111/j.1151-2916.1993.tb03739.x
Abstract
The effect of defect structure on electrical conductivity for Mn‐doped BaTiO3 at high temperatures was studied experimentally and theoretically. The measured conductivity was proportional to Po2−1/4 in the n‐type region, and to Po2+1/6 in the p‐type region in the temperature range between 900° and 1000°C. The results agree with calculations on the basis of the equilibrium equation for the valence change of Mn ions between tetravalent and trivalent. In the p‐type region, the concentration of trivalent Mn ions decreases with Po2−1/6.Keywords
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