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

页码：1209 / 1212

页数：4

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