MISC

1996年

偏光反射異方性を用いた磁気記録媒体内粒子配向性の評価

日本応用磁気学会誌
  • 三澤 諭
  • ,
  • 工藤 益男
  • ,
  • 佐藤 雄二
  • ,
  • 増子 徹

20
3
開始ページ
790
終了ページ
794
記述言語
日本語
掲載種別
DOI
10.3379/jmsjmag.20.790
出版者・発行元
The Magnetics Society of Japan

The orientation of acicular Fe particles in magnetic coating media was investigated by the use of a polarized light reflection technique. The particle volume fraction, φP, of the magnetic coatings was changed from 30.5 to 53.7 vol%. The reflection ratio was compared with the squareness of the hysteresis for the coatings, measured by VSM, indicating the maximum value when plotted as a function of φP. The reflection intensity was strongly influenced by the surface roughness of the magnetic coatings. At a value of φP=45.1 vol%, the particles were well dispersed in the media, with the result that the coating surface became very smooth. The orientation of particles in a magnetic paint was also expressed as a function of the angle between the electric vector of the polarized light and the direction of the applied magnetic field. However, the reflection ratio as a function of another volume fraction, φPL, of the magnetic paints decreased with an increase in the apparent viscosity of the magnetic dispersion.

リンク情報
DOI
https://doi.org/10.3379/jmsjmag.20.790
CiNii Articles
http://ci.nii.ac.jp/naid/130004478175
URL
https://jlc.jst.go.jp/DN/JALC/00039999658?from=CiNii
ID情報
  • DOI : 10.3379/jmsjmag.20.790
  • ISSN : 0285-0192
  • ISSN : 1880-4004
  • CiNii Articles ID : 130004478175

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