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JETP Letters

, Volume 109, Issue 11, pp 722–728 | Cite as

Temperature Dependence of the Exchange Anisotropy of a GdFeCo Ferrimagnetic Film Coupled to the IrMn Antiferromagnet

  • O. V. KoplakEmail author
  • V. S. Gornakov
  • Yu. P. Kabanov
  • E. I. Kunitsyna
  • I. V. Shashkov
Condensed Matter
  • 4 Downloads

Abstract

The uniaxial anisotropy and kinetics of the transformation of the domain structure in a ferrimagnetic GdFeCo film exchange-coupled to the IrMn antiferromagnet have been studied in a wide temperature range. Ta/Pt/GdFeCo/IrMn/Pt multilayer structures with perpendicular magnetic anisotropy demonstrate the compensation of the sublattice magnetization at K and K. Nonmonotonic temperature dependences of the exchange bias field HEX and coercivity HC are revealed. It is established that the slope of the dependence and the quantity HEX change sign at T1. An orientational phase transition is detected at a temperature of TCR = 35 K, below which uniaxial anisotropy, as well as the mechanism of coercive force formation, changes.

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Copyright information

© Pleiades Publishing, Inc. 2019

Authors and Affiliations

  • O. V. Koplak
    • 1
    • 2
    Email author
  • V. S. Gornakov
    • 3
  • Yu. P. Kabanov
    • 3
  • E. I. Kunitsyna
    • 1
    • 2
  • I. V. Shashkov
    • 3
  1. 1.Institute of Problems of Chemical PhysicsRussian Academy of SciencesChernogolovka, Moscow regionRussia
  2. 2.Tambov State Technical UniversityTambovRussia
  3. 3.Institute of Solid State PhysicsRussian Academy of SciencesChernogolovka, Moscow regionRussia

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