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Optical phenomena in bismuth-substituted ferrite-garnet films in external electric field

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Abstract

Magneto-electric properties of bismuth-substituted ferrite-garnet epitaxial films and yttrium ferrite-garnet films have been investigated by using optical polarimetry method, electromagneto-optical (EMO) effect. The EMO effect in the transverse electric (E) field was measured. In the yttrium ferrite-garnet films, the EMO effect in the specified geometry is not registered, though in a longitudinal E-field, it was observed by us. The EMO effect in separate multidomain areas of bismuth-substituted ferrite-garnet films was registered in the transverse electric field. A weak hysteresis appears in the magnetic-field dependences of the measured effect. A value of the EMO signal considerably depends on the external magnetic field, and in the homogeneously magnetized films, the EMO effect is practically absent. The irradiation of bismuth-substituted ferrite-garnet films by powerful laser impulse leads to increase of the EMO signal that can be a result of removal, in them, of nonuniform pressure.

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Authors and Affiliations

  1. Department of Radiophysics, Taras Shevchenko Kiev National University, 2, Prospekt Glushkova Street, 03127, Kiev, Ukraine

    V. E. Koronovskyy

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  1. V. E. Koronovskyy
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Correspondence to V. E. Koronovskyy.

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Koronovskyy, V.E. Optical phenomena in bismuth-substituted ferrite-garnet films in external electric field. Appl. Phys. A 95, 351–355 (2009). https://doi.org/10.1007/s00339-008-4944-x

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  • DOI: https://doi.org/10.1007/s00339-008-4944-x

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