Dielectric investigations of vanadium modified barium zirconium titanate ceramics obtained from mixed oxide method

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• 作者：F. Moura ; A.Z. Simõ ; es ; E.C. Aguiar ; I.C. Nogueira ; M.A. Zaghete ; J.A. Varela ; E. Longo
• 关键词：Ferroelectrics ; X-ray diffraction ; Dielectric response
• 刊名：Journal of Alloys and Compounds
• 出版年：2009
• 出版时间：24 June 2009
• 年：2009
• 卷：479
• 期：1-2
• 页码：280-283
• 全文大小：353 K

文摘

Vanadium modified barium zirconium titanate ceramics Ba(Zr_0.10Ti_0.90)O₃:2V (BZT:2V) were prepared from the mixed oxide method. According to X-ray diffraction analysis, addition of vanadium leads to ceramics free of secondary phases. Electrical characteristics reveal a dielectric permittivity at around 15,000 with low dielectric loss with a remnant polarization (P_r) of 8 μC/cm² at 2 kV/cm. From the obtained results, we assume that vanadium substitution in the BZT lattice affects dielectric characteristics due to the electron-relaxation-mode in which carriers (polarons, protons, and so on) are coupled with existing dielectric modes.