Transport and magnetic properties of Sr doped Nd(0.55)Ca(0.45)MnO(3)

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	Transport and magnetic properties of Sr doped Nd(0.55)Ca(0.45)MnO(3)
	K. F. Wang; Y. Wang; S. Dong; X. Y. Yao; J. M. Liu
	2008
发表期刊	Journal of Electroceramics
ISSN	1385-3449
卷号	21 期号:1-4 页码:344-348
摘要	The effect of Sr doping on the transport and snag netism properties of charge/orbital-ordered Nd(0.55)Ca(0.45)MnO(3) is investigated. A low temperature phase transition from a charge/orbital ordered insulator to a ferromagnetic metal was founded in the Nd(0.55)(Ca(1-x)Sr(x))(0.45)MnO(3) samples. The ground state is the charge/orbital ordered insulator at x < 0.2, while for x > 0.3 it changes to a ferromagnetic metal. The resistivities of the samples exhibit almost ideal percolation behavior with a percolation threshold of 0.3. Therefore, this system shows an intricate competition between metallic ferromagnetism and charge/orbital ordered insulator and the percolation behavior demonstrates that the relative volumes of ferromagnetic phase and charge/orbital phases changes with the doping content x and temperature.
部门归属	[wang, k. f.; wang, y.; dong, sh.; yao, x. y.; liu, j. -m.] nanjing univ, solid state microstruct lab, nanjing 210093, peoples r china. [wang, k. f.; wang, y.; dong, sh.; yao, x. y.; liu, j. -m.] chinese acad sci, int ctr mat phys, shenyang, peoples r china.;liu, jm (reprint author), nanjing univ, solid state microstruct lab, nanjing 210093, peoples r china;liujm@nju.edu.cn
关键词	Colossal Magnetoresistance Effect Phase Separation Percolation Behavior Phase-separation Colossal Magnetoresistance Manganites Conductivity Resistivity Percolation Physics Oxides
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文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/33138
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	K. F. Wang,Y. Wang,S. Dong,et al. Transport and magnetic properties of Sr doped Nd(0.55)Ca(0.45)MnO(3)[J]. Journal of Electroceramics,2008,21(1-4):344-348.
APA	K. F. Wang,Y. Wang,S. Dong,X. Y. Yao,&J. M. Liu.(2008).Transport and magnetic properties of Sr doped Nd(0.55)Ca(0.45)MnO(3).Journal of Electroceramics,21(1-4),344-348.
MLA	K. F. Wang,et al."Transport and magnetic properties of Sr doped Nd(0.55)Ca(0.45)MnO(3)".Journal of Electroceramics 21.1-4(2008):344-348.