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 -