Magnetic Anisotropy of Magnetoplumbite BaFe12O19
1965 年 20 巻 5 号 p. 760-769
詳細
1965 年 20 巻 5 号 p. 760-769
The ground state splitting of Fe3+ in a strong trigonal field is studied theoretically in order to account for the uniaxial anisotropy of hexagonal crystal BaFe12O19. The spin Hamiltonian DSz2 is derived as the second-order contribution of the spin-orbit interaction, the crystal field being treated as a part of the unperturbed Hamiltonian. It is shown that reasonable values of crystal field parameters lead to the observed value of D∼−2.0 cm−1.
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