Effect of doping with Nd3+ ions on the structural and ferroelectric properties of Ca0.28Ba0.72Nb2O6 single crystal

被引：17
|
作者：
Gao, W. L. [1 ,2 ]
Zhang, H. J. [1 ,2 ]
Xia, S. Q. [1 ,2 ]
Huang, B. B. [1 ,2 ]
Liu, D. [1 ,2 ]
Wang, J. Y. [1 ,2 ]
Jiang, M. H. [1 ,2 ]
Zheng, L. M. [3 ]
Wang, J. F. [3 ]
Lu, C. J. [4 ]
机构：
[1] Shandong Univ, State Key Lab Crystal Mat, Jinan 250100, Shandong, Peoples R China
[2] Shandong Univ, Inst Crystal Mat, Jinan 250100, Shandong, Peoples R China
[3] Shandong Univ, Sch Phys, Jinan 250100, Shandong, Peoples R China
[4] Qingdao Univ, Lab Fiber Mat & Modern Text, Growing Base State Key Lab, Qingdao 266071, Peoples R China
来源：
MATERIALS RESEARCH BULLETIN | 2010年 / 45卷 / 09期
基金：
中国国家自然科学基金;
关键词：
Oxides; X-ray diffraction; Dielectric properties; Ferroelectricity; STRONTIUM-BARIUM-NIOBATE; CAXBA1-XNB2O6 X=0.28; PHASE-TRANSITION; GROWTH; CBN-28;
D O I：
10.1016/j.materresbull.2010.05.024
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The crystal structure of Ca0.28Ba0.72Nb2O6(CBN-28) crystal with Nd-doping has been determined from X-ray single crystal diffraction data, in the tetragonal system with space group P4bm and the following parameters: a = b = 12.458 angstrom, c = 3.954 angstrom, V = 613.688 angstrom(3), and Z = 5. X-ray diffraction results on a Nd-doped CBN-28 single crystal also have demonstrated that Nd3+ and Ca2+ occupy the same site in the crystal structure. Dielectric and ferroelectric measurements have been performed. Transition from ferroelectric to paraelectric at around 223 degrees C has been observed. The Nd-doped crystal has a lower Curie temperature (T-m) than that of undoped CBN-28 crystal. The spontaneous polarization (P-s) and coercive electric field (E-c) also decrease compared with their values in the undoped CBN-28 crystal. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1209 / 1212
页数：4
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