Spin-reorientational phase transition in the basal plane in an α-Fe2O3: (Ga, Dy) crystal |
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| Authors: | G S Patrin E V Eremin A V Shabalin |
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| Institution: | (1) Krasnoyarsk State University, Krasnoyarsk, 660041, Russia;(2) Kirenskii Institute of Physics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russia |
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| Abstract: | A spin-reorientational phase transition in the basal plane, which was experimentally observed earlier, is explained in terms of a model in which the crystalline Fe-ion matrix is considered as a continuum, while dopant Dy ions are treated as quasi-Ising ions. The transition is established to be due to the Fe-subsystem anisotropy competing with that of the rare-earth subsystem. |
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