Photoluminescence and electrical properties of Eu-doped (Na0.5Bi0.5)TiO3 ferroelectric single crystals

被引：4
|
作者：
Zhang, Haiwu [1 ,2 ]
Zhao, Xiangyong [1 ]
Deng, Hao [1 ,2 ]
Chen, Chao [1 ,2 ]
Lin, Di [1 ]
Li, Xiaobing [1 ]
Yan, Jun [3 ]
Luo, Haosu [1 ]
机构：
[1] Univ Chinese Acad Sci, Key Lab Inorgan Funct Mat & Devices, Shanghai Inst Ceram, Shanghai 201800, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[3] Shanghai Municipal Elect Power Co, Shibei Power Supply Branch, Shanghai 200072, Peoples R China
来源：
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2014年 / 114卷 / 02期
关键词：
TRANSITIONS;
D O I：
10.1007/s00339-013-8176-3
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Eu3+-doped Na0.5Bi0.5TiO3 (Eu:NBT) single crystals were grown by a top-seeded solution growth method. Photoluminescence emission and excitation spectra of Eu:NBT were investigated. The two transitions in F-7(0) -> D-5(0) excitation spectra reveal that Eu3+ ions were incorporated into two adjacent crystallographic sites in NBT, i.e., Bi3+ and Na+ sites. The former has a symmetrical surrounding, while the later has a disordered environment, which was confirmed by decay curve measurements. The dielectric dispersion behavior was depressed and the piezoelectric and ferroelectric properties were improved after Eu doping.
引用
收藏
页码：357 / 361
页数：5
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