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Surface fastening of domain boundaries in epitaxial ferrite-garnet films

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Abstract

The process of quasistatic shifting of domain boundaries (DB) in weak magnetic fields is studied in epitaxial ferrite-garnet films (EFGF). The investigations were performed by using the Faraday magnetooptical effect by the method of domain boundary oscillation in a variable magnetic field and by recording small shifts in a permanent field. Artificial fastening of EFGF DB is performed on the film surface-air by fields of scattering from a thin MnBi layer deposited on the EFGF with a different magnetization state. The assumption of DB fastening in EFGF on the film-substrate transition layer is confirmed experimentally. The influence of the transition layer characteristics on the magnitude of the EFGF coercive force is discussed.

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Authors and Affiliations

  1. M. V. Lomonosov Moscow State University, USSR

    Yu. N. Fedyunin

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  1. Yu. N. Fedyunin
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, No. 11, pp. 52–57, November, 1989.

The author is deeply grateful to A. G. Shishkov for discussing the research.

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Fedyunin, Y.N. Surface fastening of domain boundaries in epitaxial ferrite-garnet films. Soviet Physics Journal 32, 909–913 (1989). https://doi.org/10.1007/BF00898962

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  • DOI: https://doi.org/10.1007/BF00898962

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