Zn doping-induced enhanced dielectric response of quantum paraelectric SrTiO3

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	Zn doping-induced enhanced dielectric response of quantum paraelectric SrTiO3
	Y. Y. Guo; Y. J. Guo; J. M. Liu
	2012
发表期刊	Journal of Applied Physics
ISSN	0021-8979
卷号	111 期号:7
摘要	The dielectric and ferroelectric behaviors of Zn2+-doped SrTiO3 (STO-Zn) have been investigated to explore the effects of Zn-doping on quantum fluctuations and ferroelectric instability. Structurally, the smaller Zn2+ ions occupy the Sr2+ sites at low substitution level up to 0.9% and an over-substitution may lead to impurity phase. It is found that no ferroelectric or relaxor-like anomaly emerges, while significantly enhanced dielectric constant and broad dielectric plateau are identified upon the substitution. These phenomena observed in Zn2+-doped STO are slightly different from well investigated Ca2+-doped STO and additional mechanism besides the off-centrality of Zn2+ ions at Sr2+ sites is possible. The transverse-field Ising model is consulted to explain self-consistently the observed effects. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.3703070]
部门归属	[guo, y. y.; guo, y. j.; liu, j-m.] nanjing univ, lab solid state microstruct, nanjing 210093, jiangsu, peoples r china. [guo, y. j.] jiangsu inst educ, dept phys, nanjing 210013, jiangsu, peoples r china. [liu, j-m.] chinese acad sci, int ctr mat phys, shenyang, peoples r china.;guo, yy (reprint author), nanjing univ, lab solid state microstruct, nanjing 210093, jiangsu, peoples r china.;liujm@nju.edu.cn
关键词	Strontium-titanate Ferroelectricity Transition Ceramics Behavior
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/59979
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. Y. Guo,Y. J. Guo,J. M. Liu. Zn doping-induced enhanced dielectric response of quantum paraelectric SrTiO3[J]. Journal of Applied Physics,2012,111(7).
APA	Y. Y. Guo,Y. J. Guo,&J. M. Liu.(2012).Zn doping-induced enhanced dielectric response of quantum paraelectric SrTiO3.Journal of Applied Physics,111(7).
MLA	Y. Y. Guo,et al."Zn doping-induced enhanced dielectric response of quantum paraelectric SrTiO3".Journal of Applied Physics 111.7(2012).