Title :
Magnetic and magneto-optical properties of Co-containing Bi-DyIG particles dispersed in a plastic binder
Author :
Hirano, Teruyoshi ; Yoshida, Kaneki ; Yamazaki, Yohtaro ; Namikawa, Tatsuru ; Kishi, Motoharu
Author_Institution :
Toppan Printing Co. Ltd., Saitama, Japan
fDate :
9/1/1997 12:00:00 AM
Abstract :
Nano-size Cox:BiDy2Al0.8Fe4.2O12 (0⩽x⩽2.0) particles were prepared with a coprecipitation method. The coating films of the particles were prepared with a coating technique. The magnetic and magneto-optical properties of the particles and films were investigated. The MS and HC of the particles and films increased with Co content, x. The Faraday rotation dropped with x. The x=0.5 film has high HC about 450 Oe, and the figure of merit at 520 nm is about 0.63. The particle size in the film was about 50~100 nm which is smaller than the wavelength of the read and write laser (633 nm). These results show that the coating Co x:BiDy2Al0.8Fe4.2O12 film is a candidate material for a new economical magneto-optical storage medium
Keywords :
Faraday effect; bismuth compounds; cobalt compounds; coercive force; dysprosium compounds; garnets; magnetic particles; magnetic thin films; magnetisation; magneto-optical recording; nanostructured materials; particle size; 50 to 100 nm; 520 nm; 633 nm; BiDy2Al5O12Fe5O12; BiDy2AGIG; BiDy2Al0.8Fe4.2O12:Co; Faraday rotation; coercive force; coprecipitation method; figure of merit; magnetic properties; magneto-optical properties; magneto-optical storage medium; nano-size Cox:BiDy2Al0.8Fe4.2O12 particles; particle coating films; particle size; plastic binder dispersion; read wavelength; saturation magnetization; write wavelength; Atomic force microscopy; Bismuth; Coatings; Coercive force; Extraterrestrial measurements; Iron; Magnetic films; Magnetic materials; Magnetic properties; Material storage; Optical materials; Plastics;
Journal_Title :
Magnetics, IEEE Transactions on
