Phase transformation and dielectric properties in Ba1鈭?/sub>xLaxZr0.1Ti0.9O3 ceramics
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- 作者：Xia Huang ; Jingji Zhang ; Ludong Ji ; Hongfang Qi ; Jiangying Wang
- 关键词：Perovskite structure ; Phase transformation ; Relaxor behavior ; Strain behavior
- 刊名：Journal of Alloys and Compounds
- 出版年：15 April, 2014
- 年：2014
- 卷：592
- 期：Complete
- 页码：105-108
- 全文大小：1055 K
文摘
Ba1鈭?/sub>xLaxZr0.1Ti0.9O3 ceramics have been prepared by the mixed-oxide route, and their structure and dielectric properties have been investigated. Results showed that La3+ ions entered the unit cell maintaining the perovskite structure. The evolution of dielectric behavior from a sharp dielectric peak with pinched phase transitions (x = 0.00) to a broad dielectric peak with frequency dependence (0.01 猢?#xA0;x 猢?#xA0;0.02) and successively to a ferroelectric relaxor (x = 0.05) was observed with increasing La concentration. Furthermore, remnant polarization and strain decreased due to phase transformation from ferroelectric tetragonal to paraelectric pseudocubic at room temperature.