Half-metallicity and anisotropy magnetoresistance properties of Heusler alloys Fe2Co1-xCrxSi

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	Half-metallicity and anisotropy magnetoresistance properties of Heusler alloys Fe2Co1-xCrxSi
	Du, Y ; Xu, GZ ; Liu, EK ; Li, GJ ; Zhang, HG ; Yu, SY ; Wang, WH ; Wu, GH
刊名	JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
	2013
卷号	335 页码:101
关键词	Half-metallicity Heusler alloy Anisotropy magnetoresistance
ISSN号	0304-8853
通讯作者	Wang, WH (reprint author), Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, POB 603, Beijing 100080, Peoples R China.
中文摘要	In this paper, we investigate the half-metallicity of Heusler alloys Fe2Co1-x CrxSi by first principles calculations and anisotropy magnetoresistance measurements. It is found that, with the increase of Cr content x, the Fermi level of Fe2Co1-xCrxSi moves from the top of valence band to the bottom of conduction band, and a large half-metallic band gap of 0.75 eV is obtained for x=0.75. We then successfully synthesized a series of Heusler Fe2Co1-x CrxSi polycrystalline ribbon samples. The results of X-ray diffraction indicate that the Fe2Co1-x CrxSi series of samples are pure phase with a high degree of order and the saturation magnetic moment follows half-metallic Slater-Pauling rule. Except for the two end members, Fe2CoSi and Fe2CrSi, the anisotropic magnetoresistance of Fe2Co1-x CrxSi (x=0.25, 0.5, and 0.75) shows a negative value suggesting they are stable half-metallic ferromagnets. (C) 2013 Elsevier B.V. All rights reserved.
资助信息	National Natural Science Foundation of China [51071172, 51171207]; National Basic Research Program of China (973 Programs) [2012CB619405]
语种	英语
公开日期	2014-01-16
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/57064]
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	Du, Y,Xu, GZ,Liu, EK,et al. Half-metallicity and anisotropy magnetoresistance properties of Heusler alloys Fe2Co1-xCrxSi[J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS,2013,335:101.
APA	Du, Y.,Xu, GZ.,Liu, EK.,Li, GJ.,Zhang, HG.,...&Wu, GH.(2013).Half-metallicity and anisotropy magnetoresistance properties of Heusler alloys Fe2Co1-xCrxSi.JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS,335,101.
MLA	Du, Y,et al."Half-metallicity and anisotropy magnetoresistance properties of Heusler alloys Fe2Co1-xCrxSi".JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS 335(2013):101.