Magnetic, electronic transport and magneto-transport behaviours of (Co1-xMnx)(2)P compounds

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	Magnetic, electronic transport and magneto-transport behaviours of (Co1-xMnx)(2)P compounds
	N. K. Sun; Y. Q. Zhang; Y. B. Li; D. Li; W. F. Li; W. Liu; X. G. Zhao; Z. D. Zhang
	2006
发表期刊	Journal of Physics D-Applied Physics
ISSN	0022-3727
卷号	39 期号:20 页码:4304-4310
摘要	Magnetic, electronic transport and magneto-transport behaviours of (Co1-xMnx)(2)P (0.55 <= x <= 0.675) compounds have been systematically investigated. A typical metallic-conductivity behaviour is observed in the ferromagnetic compound (Co0.45Mn0.55)(2)P. The increase in the Mn concentration gives rise to dramatic changes in magnetic, electronic transport and magneto-transport behaviours. With increasing temperature, a first-order phase transition from antiferromagnetism to ferromagnetism takes place at about 145 K, 185K and 240K for x = 0.60, 0.625 and 0.65, respectively. (Co0.4Mn0.6)(2)P and (Co0.375Mn0.625)(2)P compounds experience a metal-insulator transition (Anderson transition) with decreasing temperature. An external magnetic field of 5 T strongly influences the Anderson transition, lowering the transition temperature from 80 to 55K for (Co0.4Mn0.6)(2)P and from 115 to 70K for (Co0.375Mn0.625)(2)P. In contrast with this metal-insulator transition, an insulating behaviour appears in the temperature range from 10 to 300K for (Co0.35Mn0.65)(2)P and (Co0.325Mn0.675)(2)P compounds. Below the antiferromagnetic-ferromagnetic transition temperature TAF-F, a metamagnetic transition can be induced by an external magnetic field. The metamagnetic transition is accompanied by a maximum magnetoresistance ratio of -7%, -6.3% or -3.7% at 5 T in the (Co0.4Mn0.6)(2)P, (Co0.375Mn0.625)(2)P or (Co0.35Mn0.65)(2)P compound at 10 K. The mechanisms of magnetoresistive behaviours are discussed in terms of the formation of a super-zone gap in the antiferromagnetic state.
部门归属	chinese acad sci, shenyang natl lab mat sci, met res inst, shenyang 110016, peoples r china. chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china.;sun, nk (reprint author), chinese acad sci, shenyang natl lab mat sci, met res inst, 72 wenhua rd, shenyang 110016, peoples r china
关键词	Metamagnetic-transition Solid Solutions Resistivity Systems Magnetoresistance Anomalies Alloys Field
URL	查看原文
WOS记录号	WOS:000241542900004
引用统计	被引频次：1[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/321006/34476
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	N. K. Sun,Y. Q. Zhang,Y. B. Li,et al. Magnetic, electronic transport and magneto-transport behaviours of (Co1-xMnx)(2)P compounds[J]. Journal of Physics D-Applied Physics,2006,39(20):4304-4310.
APA	N. K. Sun.,Y. Q. Zhang.,Y. B. Li.,D. Li.,W. F. Li.,...&Z. D. Zhang.(2006).Magnetic, electronic transport and magneto-transport behaviours of (Co1-xMnx)(2)P compounds.Journal of Physics D-Applied Physics,39(20),4304-4310.
MLA	N. K. Sun,et al."Magnetic, electronic transport and magneto-transport behaviours of (Co1-xMnx)(2)P compounds".Journal of Physics D-Applied Physics 39.20(2006):4304-4310.