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Crystal Field Theory of Magnetic Anisotropy of RbNiF 3
Author(s) -
Jäger E.
Publication year - 1972
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2220520107
Subject(s) - magnetocrystalline anisotropy , condensed matter physics , anisotropy , spins , crystal (programming language) , magnetization , coupling constant , field (mathematics) , crystal field theory , magnetic anisotropy , coupling (piping) , spin–orbit interaction , magnetic field , physics , materials science , quantum mechanics , ion , mathematics , computer science , pure mathematics , metallurgy , programming language
Basing on crystal field theory the constants K 1 and K 2 of the magnetocrystalline anisotropy and the anisotropy of magnetization of RbNiF 3 are calculated. The coupling of the spins to the crystal field via spin‐orbit coupling is responsible for the magnetic anisotropy, the interaction of the spins is treated in the molecular field approximation. Using experimental values of the splitting in cubic crystal fields, 10 Dq , of the spin‐orbit coupling constant λ, and of the molecular field H ex the calculated values of K 1 and K 2 at T = 0 K agree with the experimental ones up to a factor two. The influence of the parameters 10 Dq , λ, H ex , and the splitting in the trigonal crystal field, 3 r, on K 1 and K 2 is discussed.