Oblique Antiferromagnetism. I. A Phenomenological Approach
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概要
- 論文の詳細を見る
A simple but useful phenomenological approach to the magnetism of a rar.dom1ymixed antiferromagmaet B. ...C..., in which a weak axial anisotropy of B-ions and astrong axial anisotropy of C-ions compete each other below a terminal concentrationx, (<< 1), is proposecl. This approach is based on a two-sublattice model includingangular variation of the sublattice magnetizations. 'l'he angular variation is inducedby the local disarray of spin alignment atad gives rise to the fourth-order anisotropyterms in the free energy. From this model, the concentration vs. external magneticfield (x-H ) phase diagram for the random mixture is derived, which consists of fourphases, namely, the paramagnetic phase, the antiferromagnetic phase, the field induced intermediate (or oblique antiferromagnetic:0AF) phase, and the spin flopphase. The magnetic resonance frequencies and the magnetization process are alsoderived.
- 社団法人日本物理学会の論文
- 1992-06-15
著者
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NAGATA Kazukiyo
Department of Physics, Faculty of Engineering, Kanagawa University
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IGARASHI Masukazu
Advanced Research Laboratory,Hitachi Ltd.
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Igarashi Masukazu
Advanced Research Laboratory Hitachi Ltd.
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Nagata Kazukiyo
Department Of Physics College Of Science Tokyo Institute Of Technology
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