Negative magnetodielectric effect in CaCu3Ti4O12

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	Negative magnetodielectric effect in CaCu3Ti4O12
	K. Chen; C. X. Huang; X. R. Zhang; Y. L. Yu; K. Lau; W. B. Hu; Q. Li; J. Wang; W. W. Lin; J. M. Liu; L. Qiu; J. S. Zhu; R. L. Withers
	2013
发表期刊	Journal of Applied Physics
ISSN	0021-8979
卷号	114 期号:23
摘要	Real part of complex relative dielectric value is relatively decreased as large as similar to 5% from 50 K to 200 K in CaCu3Ti4O12, by applying a 6-T static magnetic field. CaCu3Ti4O12 is thus implied primarily by the negative magnetodielectric effect, as a unified dielectric system in which 1-D finite dipole chains of B-site titanium ions, coexist with a collective of polaron-like 3d-electrons of A-site copper ions: the dipole chains are thermally activated for lattice ionic polarization above 50 K, and suppressed by the short-range hop of these quasi-particles, while their long-range movement are for bulk electronic polarization above 151 K. (C) 2013 AIP Publishing LLC.
部门归属	[chen, kai ; huang, chenxi ; zhang, xirui] nanjing univ sci & technol, dept phys, nanjing 210094, jiangsu, peoples r china. [chen, kai ; lin, weiwei ; liu, junming ; qiu, li ; zhu, jinsong] nanjing univ, natl lab solid state microstruct, nanjing 210093, jiangsu, peoples r china. [chen, kai ; yu, yuanlie ; lau, kenny ; hu, wanbiao ; li, qian ; wang, jian ; withers, ray l.] australian natl univ, res sch chem, canberra, act 0200, australia. [liu, junming] chinese acad sci, china & int ctr mat phys, shenyang 110016, peoples r china. ; chen, k (reprint author), nanjing univ sci & technol, dept phys, nanjing 210094, jiangsu, peoples r china. ; kai@njust.edu.cn ; jszhu@nju.edu.cn ; withers@rsc.anu.edu.au
关键词	High-dielectric-constant Ising-model Analysis Magnetic-structures Copper-titanate Perovskite Polarization Ceramics Behavior Films
URL	查看原文
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/72396
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	K. Chen,C. X. Huang,X. R. Zhang,et al. Negative magnetodielectric effect in CaCu3Ti4O12[J]. Journal of Applied Physics,2013,114(23).
APA	K. Chen.,C. X. Huang.,X. R. Zhang.,Y. L. Yu.,K. Lau.,...&R. L. Withers.(2013).Negative magnetodielectric effect in CaCu3Ti4O12.Journal of Applied Physics,114(23).
MLA	K. Chen,et al."Negative magnetodielectric effect in CaCu3Ti4O12".Journal of Applied Physics 114.23(2013).