Nonmagnetic B-site impurity-induced ferromagnetic tendency in CE-type manganites

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	Nonmagnetic B-site impurity-induced ferromagnetic tendency in CE-type manganites
	X. Chen; S. Dong; K. F. Wang; J. M. Liu; E. Dagotto
	2009
发表期刊	Physical Review B
ISSN	1098-0121
卷号	79 期号:2
摘要	Using a two-orbital model and Monte Carlo simulations, we investigate the effect of nonmagnetic B-site substitution on half-doped CE-type manganites. The lattice defects induced by this substitution destabilize the CE phase, which transforms into (1) the ferromagnetic (FM) metallic competing state, (2) a regime with short-range FM clusters, or (3) a spin-glass state, depending on couplings and on the valence of the B-site substitution. While a C-type antiferromagnetic state is usually associated with an average e(g) charge density of less than 0.5, the nonmagnetic B-site substitution that lowers the e(g) charge density is still found to enhance the FM tendency in our simulations. The present calculations are in qualitative agreement with experiments and provide a rationalization for the complex role of nonmagnetic B-site substitution in modulating the phase transitions in manganites.
部门归属	[chen, xiao; dong, shuai; wang, kefeng; liu, j. -m.] nanjing univ, solid state microstruct lab, nanjing 210093, peoples r china. [dong, shuai; dagotto, elbio] univ tennessee, dept phys & astron, knoxville, tn 37996 usa. [dong, shuai; dagotto, elbio] oak ridge natl lab, div mat sci & technol, oak ridge, tn 37831 usa. [liu, j. -m.] chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china.;chen, x (reprint author), nanjing univ, solid state microstruct lab, nanjing 210093, peoples r china;liujm@nju.edu.cn
关键词	Antiferromagnetic Materials Calcium Compounds Crystal Defects Ferromagnetic Materials Magnetic Impurities Magnetic Transitions Manganese Compounds Monte Carlo Methods Praseodymium Compounds Spin Glasses Superexchange Interactions Cr
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WOS记录号	WOS:000262978100055
引用统计	被引频次：22[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/31831
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	X. Chen,S. Dong,K. F. Wang,et al. Nonmagnetic B-site impurity-induced ferromagnetic tendency in CE-type manganites[J]. Physical Review B,2009,79(2).
APA	X. Chen,S. Dong,K. F. Wang,J. M. Liu,&E. Dagotto.(2009).Nonmagnetic B-site impurity-induced ferromagnetic tendency in CE-type manganites.Physical Review B,79(2).
MLA	X. Chen,et al."Nonmagnetic B-site impurity-induced ferromagnetic tendency in CE-type manganites".Physical Review B 79.2(2009).