Microscopic study of Cr2+ ion in the quasi-2D mixed system Rb2MnxCr1−xCl4

摘要: Abstract The effective point symmetry around Cr 2+ ion in the quasi-two-dimensional (2D) mixed system Rb 2 Mn x 1− Cl 4 is D 2h but it approximates closely to 4h . Possible energy-level schemes for as well are investigated using superposition model order discriminate between two assigned previously ground states ∥ − y 〉 and ∥z 〉. enables also study of dependence crystal-field parameters energy levels on concentration ( ) Using our earlier microscopic relationships spin Hamiltonian b k q , g i level splittings (Δ within 5 term symmetry, values 0 z predicted a wide range involved. diagrams versus spin-orbit (λ) spin-spin (ϱ) interaction worked out λ ϱ specific zero-field splitting studied. sources discrepancies various experimental data discussed. For first time, fourth-order determined. present comprehensive investigation single-ion properties provides results indispensible explaining magnetic anisotropy predicting EPR spectra at high frequency field.