On the Existence of Spin Glass Region in Alloys between Ferro-and Antiferro-Magnetic Metals
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The magnetic structure in the ground state of alloys between the ferromagnetic andthe antiferromagnetic metals is investigated by using the coherent potential approxi-mation (CPA) combined with the Hartree-Fock (HF) approximation for the HubbardHamiltonian. By bearing in mind Fe-Cr alloys, the successive transitions from theferromagnetic state to the antiferromagnetic one via the spin glass one with varying thealloy composition are demonstrated by the HF-CPA calculation, which distinguishesFe atoms with magnetic moments parallel to the bulk magnetization or the sublatticeone from those with antiparallel moments. An overall agreement between variousmagnetic measurements on Fe-Cr and the present calculation is obtained.
- 社団法人日本物理学会の論文
- 1982-03-15
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