Charge ordering in PrCuMn6O12 and its behavior under pressure

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	Charge ordering in PrCuMn6O12 and its behavior under pressure
	Zhang, W ; Yao, LD ; Yang, LX ; Liu, ZX ; Jin, CQ ; Yu, RC
刊名	JOURNAL OF APPLIED PHYSICS
	2010
卷号	107 期号:2
关键词	MAGNETIC-FIELD GIANT MAGNETORESISTANCE DOUBLE EXCHANGE TRANSITION DIFFRACTION PEROVSKITES MANGANITES CAMN7O12 OXIDES
ISSN号	0021-8979
通讯作者	Yu, RC: Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, POB 603, Beijing 100190, Peoples R China.
中文摘要	Polycrystalline PrCuMn6O12 sample has been successfully synthesized. It has been characterized by x-ray diffraction (XRD), magnetic and magnetotransport measurements at ambient pressure, and transport property measurements under pressures. From the refinements of XRD data, a cubic phase and a trigonal phase with charge ordering state were identified at higher and lower temperatures, respectively. The temperature dependence of the resistance indicates that the phase transition is a first-order transition. Both effective paramagnetic moments of the trigonal and cubic phases can be explained by orbital moment freezing theory. The transport property of the trigonal phase has been fitted with Mott's law for variable range hopping. Though the magnetoresistance value is not large, the pressure-induced resistance value change of PrCuMn6O12 is positive and achieves 264.8%. The cubic phase is suppressed under pressure and transformed to the trigonal phase at 15 kbar, indicating favor of the charge ordering state under pressure. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3294608]
收录类别	SCI
资助信息	National Natural Science Foundation of China [10774168, 50621061]; State Key Development Program for Basic Research of China [2005CB623602, 2010CB731600]
语种	英语
公开日期	2013-09-17
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/34688]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Zhang, W,Yao, LD,Yang, LX,et al. Charge ordering in PrCuMn6O12 and its behavior under pressure[J]. JOURNAL OF APPLIED PHYSICS,2010,107(2).
APA	Zhang, W,Yao, LD,Yang, LX,Liu, ZX,Jin, CQ,&Yu, RC.(2010).Charge ordering in PrCuMn6O12 and its behavior under pressure.JOURNAL OF APPLIED PHYSICS,107(2).
MLA	Zhang, W,et al."Charge ordering in PrCuMn6O12 and its behavior under pressure".JOURNAL OF APPLIED PHYSICS 107.2(2010).