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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.
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页码:357 / 361
页数:5
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