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Spin-dependent current and magnetization reversal in Tb22Co5Fe73/Pr6O11/Tb19Co5Fe76 nanofilms in laser radiation field

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Abstract

The results of investigation of magnetization reversal dynamics of ferrimagnetic amorphous nanolayers with transverse anisotropy is investigated for Al2O3/Tb22Co5Fe73/Al2O3 and Al2O3/Tb22Co5Fe73/Pr6O11/Tb19Co5Fe76/Al2O3 multilayer films irradiated by laser pulses, as well as the effect of such irradiation on the resistance in a Tb22Co5Fe73/Pr6O11/Tb19Co5Fe76 tunnel microcontact. It is shown that magnetization reversal in magnetic nanolayers in the laser radiation field may occur not only because of heating and the action of the external magnetic field, but also under the action of the magnetic field induced by circularly polarized laser radiation, as well as owing to transfer of magnetic moments by polarized electrons. Laser radiation can be used to control (by changing the resistance by a factor of 1.5–2.0) the conductivity of the Tb22Co5Fe73/Pr6O11/Tb19Co5Fe76 tunnel microresistor.

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Authors and Affiliations

  1. Institute of Magnetism, National Academy of Sciences of Ukraine, Kyiv, 03142, Ukraine

    N. N. Krupa

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  1. N. N. Krupa
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Correspondence to N. N. Krupa.

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Original Russian Text © N.N. Krupa, 2009, published in Zhurnal Éksperimental’noĭ i Teoreticheskoĭ Fiziki, 2009, Vol. 108, No. 5, pp. 981–992.

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Krupa, N.N. Spin-dependent current and magnetization reversal in Tb22Co5Fe73/Pr6O11/Tb19Co5Fe76 nanofilms in laser radiation field. J. Exp. Theor. Phys. 108, 856–865 (2009). https://doi.org/10.1134/S1063776109050148

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  • DOI: https://doi.org/10.1134/S1063776109050148

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