Temperature dependence on the electrical properties of Ba(Ti_0.90Zr_0.10)O₃:2V ceramics

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• 作者：F. Moura ; A.Z. Simõ ; es ; C.A. Paskocimas ; M.A. Zaghete ; J.A. Varela ; E. Longo
• 关键词：Ceramics ; Annealing ; Ferroelectricity
• 刊名：Materials Chemistry and Physics
• 出版年：2010
• 出版时间：1 October 2010
• 年：2010
• 卷：123
• 期：2-3
• 页码：772-775
• 全文大小：251 K

文摘

Barium zirconium titanate ferroelectric ceramics modified with vanadium Ba(Ti_0.90Zr_0.10V_0.02)O₃ (BZT:2V) were prepared from powders synthesized using the mixed oxide method. The effect of temperature on the structural and electrical properties of BZT:2V ceramics was investigated. X-ray diffraction data evidenced no secondary phases. As temperature decreases, the maximum dielectric permittivity decreased. The fine-grained sample showed a ‘relaxor-like’ ferroelectric behavior. The dielectric permittivity reaches a maximum value (_m  16,000 at 1 kHz) for the BZT:2V ceramics sintered at 1623 K for 4 h. Remnant polarization (P_r) and coercive field were also temperature dependent.