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
- ,
- ,
- ,
- 巻
- 20
- 号
- 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
- ID情報
-
- DOI : 10.3379/jmsjmag.20.790
- ISSN : 0285-0192
- ISSN : 1880-4004
- CiNii Articles ID : 130004478175