Electrical Properties of Acceptor Doped BaTiO3

Barium titanate doped with Mg, Mn and Mg + Mn was synthesised by the Pechini method, and specimens sintered at 1320 C in air. Electrical conductivity was measured at 1100 C at different pO2 values, and the leakage current at 150 C. The solubility limit of Mn on Ti sites was approximately 1.0 mol%. T...

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Bibliographic Details
Published inJournal of electroceramics Vol. 13; no. 1-3; pp. 549 - 553
Main Authors Jeong, J, Han, Y H
Format Journal Article
LanguageEnglish
Published Dordrecht Springer Nature B.V 01.07.2004
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Summary:Barium titanate doped with Mg, Mn and Mg + Mn was synthesised by the Pechini method, and specimens sintered at 1320 C in air. Electrical conductivity was measured at 1100 C at different pO2 values, and the leakage current at 150 C. The solubility limit of Mn on Ti sites was approximately 1.0 mol%. The oxygen vacancy concentration of the Mg + Mn doped material was approximately 50 times greater than that of the undoped material, and doping with 0.5 mol% Mg combined with 1.0 mol% Mn gave the lowest leakage current. The leakage currents of Mg-doped and undoped barium titanate were suppressed by Mn co-doping, so long as the Mn content was > the Mg content. 32 refs.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
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ISSN:1385-3449
1573-8663
DOI:10.1007/s10832-004-5156-1