Is Heusler compound Co 2CrAl a half-metallic ferromagnet: electronic band structure, and transport properties

Ming Zhang; Zhuhong Liu; Haining Hu; Guodong Liu; Yuting Cui; Jinglan Chen; Guangheng Wu; Xixiang Zhang; Gang Xiao

doi:10.1016/j.jmmm.2003.10.017

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Is Heusler compound Co 2CrAl a half-metallic ferromagnet: electronic band structure, and transport properties

Journal article

Peer reviewed

Is Heusler compound Co 2CrAl a half-metallic ferromagnet: electronic band structure, and transport properties

Ming Zhang, Zhuhong Liu, Haining Hu, Guodong Liu, Yuting Cui, Jinglan Chen, Guangheng Wu, Xixiang Zhang and Gang Xiao

Journal of magnetism and magnetic materials, Vol.277(1), pp.130-135

2004

DOI: https://doi.org/10.1016/j.jmmm.2003.10.017

Abstract

Band structure

Heusler alloy

Transport property

We report the electronic band structure, and transport properties of the Heusler compound Co 2CrAl. The band structure calculation shows that Co 2CrAl is a true half-metallic ferromagnet with a magnetic moment of 3 μ B per formula, characterized by a full indirect band gap of 0.475 eV at around the Fermi level in the minority-spin band. The electronic resistivity shows a power-law T 3.15 temperature dependence at low temperatures ascribed to the unconventional one-magnon scattering processes. A negative MR maximum of –0.33% is obtained for Co 2CrAl at 300 K.

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Title: Is Heusler compound Co 2CrAl a half-metallic ferromagnet: electronic band structure, and transport properties
Creators - without role: Ming Zhang - Institute of Physics
Zhuhong Liu - Institute of Physics
Haining Hu - State Key Laboratory for Magnetism, Institute of Physics, Chinese Academy of Sciences, P.O. Box 603, Beijing 100080, People's Republic of China
Guodong Liu - Institute of Physics
Yuting Cui - Institute of Physics
Jinglan Chen - Institute of Physics
Guangheng Wu - Institute of Physics
Xixiang Zhang - Hong Kong University of Science and Technology
Gang Xiao - Brown University
Publication Details: Journal of magnetism and magnetic materials, Vol.277(1), pp.130-135
Publisher: Elsevier B.V
Identifiers: 9943549208331
Academic Unit: King Abdullah University of Science & Technology
Language: English
Resource Type: Journal article