Unidirectional anisotropy in ferromagnetic-ferrimagnetic film structures |
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| Authors: | G I Frolov V Yu Yakovchuk V A Seredkin R S Iskhakov S V Stolyar V V Polyakov |
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| Institution: | (1) Kirenskii Institute of Physics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russia;(2) Krasnoyarsk State University, Krasnoyarsk, 660041, Russia |
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| Abstract: | A mechanism of unidirectional anisotropy formation in an exchange-coupled ferromagnetic-ferrimagnetic film structure with
orthogonal effective magnetizations in the layers is investigated. The reason for unidirectional anisotropy is the magnetic
heterogeneity of the ferrimagnetic layer in the compensation range. Magnetization reversal in the magnetically soft layer
of an (REE–transition metal)/NiFe film structure is discussed based on a model of uniform rotation of magnetization. It is
found that unidirectional anisotropy sharply decreases the magnetic noise level in the magnetically soft layer. The field
of application of these materials is outlined. |
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