Renormalized Spin Wave Theory of Nearly Two-Dimensional Ferromagnet K_2CuF_4
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概要
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The temperature and the magnetic field dependences of the magnetization of the ferromagnetic layer-type compound K_2 CuF_4 have been analyzed by the spin wave theory which takes into account the spin wave interaction. It is shown that the spin wave interaction plays rather important role in the nearly two-dimensional magnetic system and gives rise to a logarithmic term in the expansion of the magnetization with respect to the temperature. The apparent T^<3/2> temperature dependence of the magnetization can be shown to be realized in a certain temperature region. With the use of the exchange interaction constants estimated in the previous investigations, the present calculation shows excellent agreements with the experiments.
- 社団法人日本物理学会の論文
- 1976-09-15
著者
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Tsuru Kazuo
Department Of Applied Science Faculty Of Engineering Kyushu University
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Uryu Norikiyo
Department Of Applied Science Faculty Of Engineering 36 Kyushu University
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Uryu Norikiyo
Department Of Wpplied Science Faculty Of Engineering Kyushu University
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