Giant magnetoresistance effect on magnetic shape memory alloys

点击翻译按钮获取中文摘要

The magnetic shape memory alloys(MSMAs) Ni-Mn-Z(Z=In, Sn) with the Heusler-type structure exhibit a giant magnetorcsistance effect in the martensitic phase. We found the strong correlation between △ρ and △M, in which △ρ and △M mean the jump of the resistivity ρ and the magnetization M at the martensitic transition temperature, respectively. Furthermore, we carried out the hard x-ray photoemission spectroscopy measurements and the first-principles calculation for Ni-Mn-Z(Z=In, Sn) MSMAs.