Magnetic softness of permalloy granular films produced by co-evaporation

T. Itoh, Y. Shimada, S. Yoshida, S. Okamoto, O. Kitakami, D. Shindo, Y. Murakami, J. H. Yoo

Research output: Contribution to journalArticle

Abstract

Permalloy granular films were fabricated by co-evaporation. In this paper, MgF2 and CaF2 are used as matrices. The films exhibit good magnetic softness and perpendicular or inplane uniaxial anisotropy that determines high frequency characteristics. The anisotropy is considered to originate from alignment of nanosized granules connected with exchange interaction. Magnetization curves, susceptibility and transmission electron microscopic images support speculation of microscopic granular structure and origin of anisotropy. Very high deposition speed is possible without serious deterioration of magnetic softness. High controllability of anisotropy and high speed deposition are advantageous from the industrial standpoint.

Original languageEnglish
Pages (from-to)3274-3276
Number of pages3
JournalIEEE Transactions on Magnetics
Volume41
Issue number10
DOIs
Publication statusPublished - Oct 1 2005
Externally publishedYes

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All Science Journal Classification (ASJC) codes

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

Cite this

Itoh, T., Shimada, Y., Yoshida, S., Okamoto, S., Kitakami, O., Shindo, D., ... Yoo, J. H. (2005). Magnetic softness of permalloy granular films produced by co-evaporation. IEEE Transactions on Magnetics, 41(10), 3274-3276. https://doi.org/10.1109/TMAG.2005.854900