Is Heusler compound Co2CrAl 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

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

61 Scopus citations

Abstract

We report the electronic band structure, and transport properties of the Heusler compound Co2CrAl. The band structure calculation shows that Co2CrAl is a true half-metallic ferromagnet with a magnetic moment of 3μB per formula, characterized by a full indirect band gap of 0.475eV at around the Fermi level in the minority-spin band. The electronic resistivity shows a power-law T3.15 temperature dependence at low temperatures ascribed to the unconventional one-magnon scattering processes. A negative MR maximum of -0.33% is obtained for Co2CrAl at 300K.

Original languageEnglish (US)
Pages (from-to)130-135
Number of pages6
JournalJournal of Magnetism and Magnetic Materials
Volume277
Issue number1-2
DOIs
StatePublished - Jun 1 2004

Keywords

  • Band structure
  • Heusler alloy
  • Transport property

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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