Temperature Dependence of Anisotropy Energy of Mn_2Sb
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概要
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Theoretical studies on the microscopic origin of the magnetic anisotropy energy of Mn_2Sb and its temperature dependence are reported. As has been observed by Jarrett et al, it is well expressed by E_α = K_1 sin^2θ. K_1 may be expressed as K_1 = K_1^<dip> + K_1^<cry>; K_1^<dip> is the anisotropy constant coming from the magnetic dipolar interaction and its value at absolute zero is calculated by the Ewald-Kornfeld method t6 be -2.99×10^5 erg per c.c., or -0.411 cm^<-1> per atom; K_1^<cry> comes from the single ion spin energy, which is assumed to be of the form, DS_2^2. Calculation of the temperature dependence of K_1^<dip> and K_1^<cry> based on the molecular field approximation. D-parameters, D_I and D_II, of the two kinds of manganese atoms on magnetically non-equivalent sites are determined to be -6.16 cm^<-1> per atom and 0.977 cm^<-1> per^- atom, respectively, by fitting the calculated K_1 to the experimental one.
- 社団法人日本物理学会の論文
- 1962-09-05
著者
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Tonegawa Takashi
Department Of Earth And Environmental Sciences Graduate School Of Environmental Studies Nagoya Unive
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Tonegawa Takashi
Department Of Physics Osaka University
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