Particle size effects on interplay between charge ordering and magnetic properties in nanosized La(0.25)Ca(0.75)MnO(3)

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	Particle size effects on interplay between charge ordering and magnetic properties in nanosized La(0.25)Ca(0.75)MnO(3)
	T. Zhang; T. F. Zhou; T. Qian; X. G. Li
	2007
发表期刊	Physical Review B
ISSN	1098-0121
卷号	76 期号:17
摘要	The charge ordering (CO) and magnetic properties of La(0.25)Ca(0.75)MnO(3) compounds with average particle sizes ranging from 40 to 2000 nm have been studied. With decreasing particle size, the CO transition gradually shifts to lower temperature and becomes increasingly wide and weak; meanwhile, the ferromagnetic cluster glass state appears, and the temperature T(G) for the appearance of ferromagnetic clusters shows a nonmonotonous variation with a maximum at about 100 nm. The magnetization at low temperature shows a relatively complex change with particle size. A core-shell model was proposed to explain these anomalous behaviors, and the temperature-particle size phase diagram of La(0.25)Ca(0.75)MnO(3) was established. These results are helpful in deeply understanding the coupling between charge and spin degrees of freedom in manganites.
部门归属	univ sci & technol china, dept phys, hefei natl lab phys sci microscale, anhua 230026, peoples r china. acad sinica, int ctr mat phys, shenyang 110015, peoples r china.;li, xg (reprint author), univ sci & technol china, dept phys, hefei natl lab phys sci microscale, anhua 230026, peoples r china;lixg@ustc.edu.cn
关键词	Cluster-glass Phase-separation State Manganites Transport Field
URL	查看原文
WOS记录号	WOS:000251326600077
引用统计	被引频次：137[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/321006/34041
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	T. Zhang,T. F. Zhou,T. Qian,et al. Particle size effects on interplay between charge ordering and magnetic properties in nanosized La(0.25)Ca(0.75)MnO(3)[J]. Physical Review B,2007,76(17).
APA	T. Zhang,T. F. Zhou,T. Qian,&X. G. Li.(2007).Particle size effects on interplay between charge ordering and magnetic properties in nanosized La(0.25)Ca(0.75)MnO(3).Physical Review B,76(17).
MLA	T. Zhang,et al."Particle size effects on interplay between charge ordering and magnetic properties in nanosized La(0.25)Ca(0.75)MnO(3)".Physical Review B 76.17(2007).