Atomic and magnetic structure of the Heusler alloys Ni2MnSb, Ni2MnSn, and Co2MnSn
A. SzytułaInstitute of Physics of the Jagiellonian University, CracowA. KołodziejczykDepartment of Solid State Physics, Metallurgy Institute, Academy of Mining and Metallurgy, CracowH. RżanyInstitute of Nuclear Physics, CracowJelena TodorovićInstitute of Nuclear Sciences, “Boris Kidrič”, Beograd-VinčaA. WanicInstitute of Nuclear Physics, Cracow
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Saturation magnetization, X-ray and neutron diffraction measurements were made on ferromagnetic alloys in the compositions Ni2MnSb, Ni2MnSn, and Co2MnSn. The compounds investigated have a crystallo-chemical structure of L21 type, with a partial disorder among NiSb atoms in the case of Ni2MnSb and Ni(Co)‒Mn atoms in that of Ni2MnSn and Co2MnSn. It was also found that in Heusler alloys the Ni atoms have zero magnetic moment, but the Co atom has a magnetic moment different from zero. The values of the magnetic moment of Mn and Co atoms were also calculated at 80 °K and found to be μMn = 3.60 to 3.75 μB, μCo = 0.7 μB. [Russian text ignored]
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