L1_<0->型Mn合金の電子構造と磁気的・電気的性質

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This article describes the electronic structures, magnetic and electrical properties of L1_<0->type Mn TM alloys which are widely used as spin valves. Experimental results for low-temperature specific heat capacity, electrical resistivity, and the Neel temperature are in harmony with the calculated results. The Neel temperature of the MnIr alloy system exhibits the highest value among Mn system alloys. The Pauling valence vs. the magnetic moment plots suggest that there is a close interrelation among the lattice volume contraction, the pseudo-gap, and the Pauling valence. The magnetic phase diagram of the MnPt alloy system and the magnetic cooling effects in the MnIr alloy system are outlined, relating to the magnetic structure. Finally, we present the concentration dependence of electrical resistivity of the L1_<0->type MnIr and MnPt alloy systems and discussed them from the viewpoint of applications.
社団法人日本磁気学会の論文
2004-01-01