Evaluation of interlayer exchange coupling in α-Fe(100)/Nd2Fe14B(001) films

Daisuke Ogawa, Kunihiro Koike, Hiroaki Kato, Shigemi Mizukami, Takamichi Miyazaki, Mikihiko Oogane, Yasuo Ando

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

We fabricated α-Fe(100)/Nd2Fe14B(001) bilayer films with different thicknesses values of the α-Fe layer on MgO(100) substrates by using an ultra-high-vacuum (UHV) magnetron sputtering system. The exchange coupling constant at the heterointerfaces of α-Fe(100)/Nd2Fe14B(001) was evaluated by analyzing the magnetization curves and the ferromagnetic resonance (FMR) spectra. We observed a significant lower shift of the α-Fe resonance field compared to that of the α-Fe single layer irrespective of the Fe-layer thickness, which suggests the existence of an internal field owing to a positive exchange coupling between the α-Fe(100) and the Nd2Fe14B(001) layers.

Original languageEnglish
Pages (from-to)489-492
Number of pages4
JournalJournal of the Korean Physical Society
Volume63
Issue number3
DOIs
Publication statusPublished - 2013 Aug 1

Keywords

  • Exchange coupling
  • Ferromagnetic resonance
  • NdFeB
  • Thin film

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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