Electronic Structure of Ni-Mn Alloys

元データ 1972-03-25 理論物理学刊行会

概要

Band structures of the ordered magnetic Ni-Mn alloys are investigated by APW method. These are ferromagnetic Ni_3Mn alloy and antiferromagnetic NiMn alloy. The density-of-states of NiMn and that of Ni_3Mn in the minority spin-state show a remarkable character. There appears a narrow and high band in the high energy region, which is separated up from the main band. There is a region of the low density-of-states between them and the Fermi energy lies in it. This means that bonding and antibonding orbitals are well separated in Ni_3Mn and NiMn. Further, the density-of-states of the Ni-rich Ni-Mn alloys is calculated by CPA. Comparing the calculated density-of-states at the Fermi energy with the observed electronic specific heat coefficient we conclude that the spin-state of the Ni-rich disordered alloys is not a simple paramagnetic state.

著者

ASANO Setsuro Institute of Physics, College of Arts and Sciences, University of Tokyo
YAMASHITA Jiro Institute for Solid State Physics, The University of Tokyo
WAKOH Shinya Institute of Library and Information Science, University of Tsukuba
Wakoh Shinya Institute For Solid State Physics The University Of Tokyo
Asano Setsuro Institute For Solid State Physics The University Of Tokyo
Yamashita Jiro Institute For Solid State Physics The University Of Tokyo
WAKOH Shinya Institute for Solid State Physics, The University of Tokyo
Asano Setsuro Institute for Solid State Physics, the University of Tokyo
Yamashita J. Institute for Solid State Physics, the University of Tokyo
Yamashita Jiro Gifu Die & Mold Engineering Co., Ltd.

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