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

doi:10.1103/PhysRevB.68.104430

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 journal › Article › peer-review

219 Scopus citations

Abstract

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 language	English (US)
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	68
Issue number	10
DOIs	https://doi.org/10.1103/PhysRevB.68.104430
State	Published - 2003
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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

abstract = "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.",

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

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TY - JOUR

T1 - Magnetic, structural, and transport properties of the Heusler alloys Co2MnSi and NiMnSb

AU - Ritchie, Lance

AU - Xiao, Gang

AU - Ji, Y.

AU - Chen, Y.

AU - Chien, L.

AU - Zhang, Ming

AU - Chen, Jinglan

AU - Liu, Zhuhong

AU - Wu, Guangheng

AU - Zhang, X.

PY - 2003

Y1 - 2003

N2 - 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.

AB - 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.

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U2 - 10.1103/PhysRevB.68.104430

DO - 10.1103/PhysRevB.68.104430

M3 - Article

AN - SCOPUS:0142182556

SN - 1098-0121

VL - 68

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 10

ER -

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

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