Title :
Magnetic properties of Co and Co-Fe electrodeposited alumite films
Author :
Arai, K.I. ; Kang, H.W. ; Ishiyama, K.
Author_Institution :
Res. Inst. of Electr. Commun., Tohoku Univ., Sendai, Japan
fDate :
9/1/1990 12:00:00 AM
Abstract :
Co and Co-Fe were electrodeposited in pores of anodic oxidized alumite films. It is shown that the magnetic anisotropy energy and the perpendicular coercive force of Co electrodeposited alumite films can be controlled widely by changing the pH and the temperature of the Co solutions without changing the particle diameter. It is shown that, by properly selecting the composition of the electrodeposited alloys, the saturation magnetization and the coercive force of the magnetic alumite films can be controlled. At a composition of 50 at.% Co-Fe, the perpendicular coercive Hc(⊥) reaches a maximum value of 2700 Oe and the saturation magnetization is as high as 382 emu/cm3 for the packing density P=0.2. Therefore, with this composition, the magnetic alumite film can be used for recording media
Keywords :
cobalt; cobalt alloys; coercive force; electrodeposits; ferromagnetic properties of substances; iron alloys; magnetic anisotropy; magnetic recording; magnetic thin films; magnetisation; Co; Co-Fe; anodic oxidized alumite films; electrodeposited alumite films; magnetic anisotropy energy; packing density; perpendicular coercive force; recording media; saturation magnetization; Coercive force; Force control; Magnetic anisotropy; Magnetic films; Magnetic properties; Magnetic recording; Perpendicular magnetic anisotropy; Perpendicular magnetic recording; Saturation magnetization; Temperature control;
Journal_Title :
Magnetics, IEEE Transactions on
