Magnetic, structural, and transport properties of the Heusler alloys Co2MnSi and NiMnSb

Lance Ritchie, Gang Xiao, Y. Ji, Y. Chen, L. Chien, Ming Zhang, Jinglan Chen, Zhuhong Liu, Guangheng Wu, X. Zhang

Research output: Contribution to journalArticlepeer-review

212 Scopus citations


We report on structural, magnetic, transport, and spin-polarization measurements of the Heusler alloys Co2MnSi and NiMnSb. Laue diffraction patterns confirm the single-crystal nature of Co2MnSi. Room-temperature transport measurements show a negative magnetoresistance in NiMnSb. Point-contact Andreev reflection measurements of the spin polarization yield polarization values for Co2MnSi and NiMnSb of 56% and 45%, respectively. Temperature dependence of resistivity for Co2MnSi reveals a relatively large residual resistivity ratio (ρ293 K/ρ5 K) typical of single-crystal Heusler alloys. In NiMnSb, resistivity and magnetization as a function of temperature show evidence of a magnetic phase transition near 90 K.

Original languageEnglish (US)
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number10
StatePublished - 2003
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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