Ferroelectricity and superparamagnetism in Sr/Ti nonstoichiometric SrTiO3

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	Ferroelectricity and superparamagnetism in Sr/Ti nonstoichiometric SrTiO3
	Y. Y. Guo; H. M. Liu; D. P. Yu; J. M. Liu
	2012
发表期刊	Physical Review B
ISSN	1098-0121
卷号	85 期号:10
摘要	The effect of Sr/Ti nonstoichiometry on the ferroelectricity and magnetism in polycrystalline SrTiO3 is investigated by the dielectric, ferroelectric, Raman, and magnetic characterizations. It revealed that the nonstoichiometric SrTiO3 exhibits both ferroelectric polarization and superparamagnetism, which increase with the degree of nonstoichiometry. It is argued that the antisite-like defects with net local dipoles and magnetic moments contribute to the ferroelectricity and superparamagnetism, confirmed by the first-principles calculations.
部门归属	[guo, y. y.; liu, h. m.; liu, j. -m.] nanjing univ, solid state microstruct lab, nanjing 210093, jiangsu, peoples r china. [yu, d. p.] peking univ, electron microscopy lab, beijing 100871, peoples r china. [liu, j. -m.] s china normal univ, inst adv mat, guangzhou 510006, guangdong, peoples r china. [liu, j. -m.] chinese acad sci, int ctr mat phys, shenyang, peoples r china.;guo, yy (reprint author), nanjing univ, solid state microstruct lab, nanjing 210093, jiangsu, peoples r china.;liujm@nju.edu.cn
关键词	Augmented-wave Method Polarization Growth
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/59981
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. Y. Guo,H. M. Liu,D. P. Yu,et al. Ferroelectricity and superparamagnetism in Sr/Ti nonstoichiometric SrTiO3[J]. Physical Review B,2012,85(10).
APA	Y. Y. Guo,H. M. Liu,D. P. Yu,&J. M. Liu.(2012).Ferroelectricity and superparamagnetism in Sr/Ti nonstoichiometric SrTiO3.Physical Review B,85(10).
MLA	Y. Y. Guo,et al."Ferroelectricity and superparamagnetism in Sr/Ti nonstoichiometric SrTiO3".Physical Review B 85.10(2012).