Uncompensated spin elements in ferromagnetic and antiferromagnetic bilayer with non-collinear spin structure

Chiharu Mitsumata, Akimasa Sakuma, Kazuaki Fukamichi, Masakiyo Tsunoda

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

The exchange bias in a ferromagnetic (FM) and antiferromagnetic (AFM) bilayer with a γ-phase disordered structure has been investigated within a framework of Heisenberg model. The magnetic atoms in the AFM layer realize the triple Q structure due to geometrical spin frustrations. This non-collinear spin structure can bring about an exchange bias in the FM/AFM bilayer system. Under the influence of the exchange bias, the uncompensated spin element appears in the AFM layer, accompanied by a shifted loop in magnetization curves, in accord with the measured loop by X-ray magnetic circular dichroism spectroscopy for an AFM layer.

Original languageEnglish
Pages (from-to)11-14
Number of pages4
JournalMaterials Transactions
Volume47
Issue number1
DOIs
Publication statusPublished - 2006 Jan

Keywords

  • Antiferromagnetic
  • Exchange bias
  • Exchange coupling
  • Heisenberg model
  • Non-collinear spin
  • Spin frustration
  • Spin structure

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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