Enhanced ferroelectric properties and thermal stability of nonstoichiometric 0.92(Na0.5Bi0.5)TiO3-0.08(K0.5Bi0.5)TiO3 single crystals

被引：25
|
作者：
Zhang, Haiwu [1 ,2 ]
Chen, Chao [1 ,2 ]
Zhao, Xiangyong [1 ]
Deng, Hao [1 ,2 ]
Li, Long [1 ,2 ]
Lin, Di [1 ]
Li, Xiaobing [1 ]
Ren, Bo [1 ]
Luo, Haosu [1 ]
Yan, Jun [3 ]
机构：
[1] Chinese Acad Sci, Shanghai Inst Ceram, Key Lab Inorgan Funct Mat & Devices, Shanghai 201800, Peoples R China
[2] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
[3] Shanghai Municipal Elect Power Co, Shibei Power Supply Branch, Shanghai 200072, Peoples R China
来源：
APPLIED PHYSICS LETTERS | 2013年 / 103卷 / 21期
关键词：
TRANSMISSION ELECTRON-MICROSCOPY; PIEZOELECTRIC PROPERTIES; NA0.5BI0.5TIO3; CERAMICS; GROWTH;
D O I：
10.1063/1.4833401
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Bi deficient, Mn doped 0.92(Na0.5Bi0.5) TiO3-0.08(K0.5Bi0.5)TiO3 single crystals were grown by carefully controlled top-seeded solution growth method. Local structures were investigated by transmission electron microscopy. The site occupation and valence state of manganese were characterized by electron paramagnetic resonance spectrum. The leakage current density in the as-grown single crystals is effectively depressed. The introduced defect complexes suppress the temperature induced phase transformation, increasing the depolarization temperature (165 degrees C) and thermal stability of ferroelectric properties. (C) 2013 AIP Publishing LLC.
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页数：5
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