Spin-reorientation phenomena have been studied in Nd_1-xY_xFe₁₁Ti compounds (x=0, 0.2, 0.4, 0.6 and 0.8). At the spin reorientation temperature, T_SR, the comparing Nd and Fe anisotropy contributions are in balance. By taking the Fe anisotropy from the Y counterpart, the anisotropy of the Nd sublattice at T_SR is determined experimentally. The temperature dependence of the Nd contribution to the magnetocrystalline anisotropy has been calculated by using a Hamiltonian consisting of crystal-field and exchange terms and was compared with the experimental results. A consistent set of parameters has been deduced by which the value T_SR can be reproduced for the whole series of the studied compounds. © 1992.

Luong N.H., Thuy N.P., Franse J.J.M.

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Từ khóa : Crystals; Intermetallics; Magnetic Materials--Electronic Properties; Magnetocrystalline Anisotropy; Spin Reorientation; Neodymium Compounds