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## Vol. 19, No. 8 (1963)

##### Topics
###### CONTENT
1963, 100 (8): 477-482. doi: 10.7498/aps.19.477
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1963, 100 (8): 483-502. doi: 10.7498/aps.19.483
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1963, 100 (8): 503-523. doi: 10.7498/aps.19.503
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Using the algebraic method of the theory of angular momentum in quantum mechanics a detailed study is made for the model of s-f interaction of rare-earth metals. A general form of Hamiltonian of s-f interaction is derived. Utilizing the method of the theory of perturbation in operator form we have obtained the general expression for the effective Hamiltonian of f-f interaction through s-f interaction. Retaining terms to the second order of smallness, besides the isotropic exchange interaction the pseudo-dipole interaction is also obtained. On the basis of the results obtained, we have discussed preliminarily the magnetic crystalline anisotropy of the ferromagnetic phase of rare-earth metals. Some experimental facts which might be explained by the above results are indicated.
1963, 100 (8): 524-537. doi: 10.7498/aps.19.524
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1963, 100 (8): 538-540. doi: 10.7498/aps.19.538
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