Magnetic properties of quaternary Heusler alloys Ni2-x Co x MnGa

T. Kanomata, Y. Kitsunai, K. Sano, Y. Furutani, H. Nishihara, R. Y. Umetsu, R. Kainuma, Y. Miura, M. Shirai

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43 Citations (Scopus)


Magnetization and initial permeability measurements were done on the Heusler alloys Ni2-x Cox MnGa (0≤x≤2). On the basis of the results, the magnetic-phase diagram was determined for Ni2-x Cox MnGa (0≤x≤2). The Curie temperature TC increases with increasing the Co concentration x. The martensitic transition temperature decreases abruptly with increasing x. The magnetic moment per formula unit at 5 K makes a broad maximum around x=1.0. The concentration dependence of the magnetic moment for Ni 2-x Cox MnGa (0≤x≤2) has been calculated using the Korringa-Kohn-Rostoker method. The computational results of the magnetic moment are in good agreement with the experimental results in this study.

Original languageEnglish
Article number214402
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number21
Publication statusPublished - 2009 Dec 3


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