Dielectric relaxation behavior and mechanism of Y_2/3Cu₃Ti₄O₁₂ ceramic

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• 作者：Jianming Deng^a ; Laijun Liu^a ; ^{ljliu2@163.com} ; Xiaojun Sun^a ; Saisai Liu^a ; Tianxiang Yan^a ; Liang Fang^a ; Brahim Elouadi^b
• 关键词：Y2/3Cu3Ti4O12 ; Ceramics ; Scaling behavior ; Polaron hopping ; Dielectric relaxation
• 刊名：Materials Research Bulletin
• 出版年：2017
• 出版时间：April 2017
• 年：2017
• 卷：88
• 期：Complete
• 页码：320-329
• 全文大小：3838 K
• 卷排序：88

文摘

Y2/3Cu3Ti4O12 (YCTO) ceramics were prepared in different atmospheres. Dielectric loss of YCTO sintered in O2 atmosphere decreased drastically. Scaling behavior indicates the relaxation time is temperature independent. Small polaron hopping is the most probable conduction mechanism. Distribution of local electrical response time is temperature independent.