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Unidirectional anisotropy in ferromagnetic-ferrimagnetic film structures

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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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Authors and Affiliations

  1. Kirenskii Institute of Physics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russia

    G. I. Frolov, V. Yu. Yakovchuk, V. A. Seredkin, R. S. Iskhakov, S. V. Stolyar & V. V. Polyakov

  2. Krasnoyarsk State University, Krasnoyarsk, 660041, Russia

    S. V. Stolyar

Authors
  1. G. I. Frolov
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  2. V. Yu. Yakovchuk
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  3. V. A. Seredkin
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  4. R. S. Iskhakov
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  5. S. V. Stolyar
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  6. V. V. Polyakov
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__________

Translated from Zhurnal Tekhnichesko\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l}\) Fiziki, Vol. 75, No. 12, 2005, pp. 69–75.

Original Russian Text Copyright © 2005 by Frolov, Yakovchuk, Seredkin, Iskhakov, Stolyar, Polyakov.

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Frolov, G.I., Yakovchuk, V.Y., Seredkin, V.A. et al. Unidirectional anisotropy in ferromagnetic-ferrimagnetic film structures. Tech. Phys. 50, 1605–1610 (2005). https://doi.org/10.1134/1.2148562

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