Journal
JOURNAL OF APPLIED PHYSICS
Volume 97, Issue 10, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.1847271
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We synthesize the polycrystalline Heusler compounds Co2Cr1-xFexAl (x=0.2-0.6). The x-ray diffraction patterns show A2 structure rather than L2(1) structure. The magnetic moment and the Curie temperature increase with increasing x. The electrical resistivity characterizes the Co2Cr1-xFexAl compounds to be not typical metals and the temperature dependence of the resistivity changes from metallic to semiconductinglike behavior with increasing Cr concentrations. We attribute the fact, which we observe for most of the compounds smaller magnetic moments than the theoretical values and the low magnetoresistance in these alloys, to the considerably high level of Co-(Cr, Fe)-type disorder. (c) 2005 American Institute of Physics.
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