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Physics of Metals and MetallographyVolume 96, Issue 3, September 2003, Pages 291-297

Giant Magnetoresistive Effect in Fe/Cr Multilayers in a Wide Range of Frequencies(Article)

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  • aInstitute of Metal Physics, Ural Division, Russian Academy of Sciences, ul. S. Kovalevskoi 18, Ekaterinburg 620219, Russian Federation
  • bNizhnii Tagil Stt. Pedagogical Inst., ul. Krasnogvardeiskaya 57, Nizhnii Tagil 622031, Russian Federation

Abstract

Penetration of electromagnetic field through Fe/Cr superlattices in a wide range of frequencies from 0.1 MHz to 38 GHz has been investigated. It is shown that noticeable frequency dependence of the transmission coefficient appears starting from the waves of the meter range. In the ranges of centimeter and millimeter waves, the variation of the transmission coefficient is caused by two physical phenomena: giant magnetoresistance and ferromagnetic resonance. Approximate equality of the values of relative variation of the microwave transmission coefficient and dc magnetoresistance is observed in these frequency ranges far from resonance conditions. A homogeneous mode of ferromagnetic resonance is observed at frequencies of the millimeter range if an external dc magnetic field is directed perpendicular to the plane in which the vectors of ac magnetic field of an electromagnetic wave of the H 10 waveguide mode lie.

  • ISSN: 0031918X
  • Source Type: Journal
  • Original language: English
  • Document Type: Article

  Ustinov, V.V.; Institute of Metal Physics, Ural Division, Russian Academy of Sciences, ul. S. Kovalevskoi 18, Russian Federation
© Copyright 2004 Elsevier B.V., All rights reserved.

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