Broadband ferromagnetic resonance of micron-scale iron wires using rectifying effect

Y. Kasatani, A. Yamaguchi, H. Miyajima, Y. Nozaki

Research output: Contribution to journalArticle

Abstract

The broadband ferromagnetic resonance study on both the single crystalline and polycrystalline Fe wires were performed using the rectifying effect. The effective Gilbert damping in the polycrystalline Fe wire was about three times larger than that in the single crystalline wire. This is attributed to the enhancement of the energy dissipation due to the incoherent rotation of the magnetization at the grains and grain boundaries in the polycrystalline wire. The difference between the experimental data and analytical calculation can be explained by the strong magnetic shape anisotropy that overcomes the external static magnetic field and forces the magnetization to be directed along the wire axis.

Original languageEnglish
Article number5772192
Pages (from-to)1587-1590
Number of pages4
JournalIEEE Transactions on Magnetics
Volume47
Issue number6 PART 1
DOIs
Publication statusPublished - 2011 Jun 1

Keywords

  • Crystalline materials
  • iron
  • magnetic resonance
  • microwave magnetics

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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