Title :
Crystallographic and recording characteristics of post-annealed Ba-ferrite sputtered films
Author :
Morisako, Akimitsu ; Matsumoto, Mitsunori ; Noae, M.
Author_Institution :
Dept. of Inf. Eng., Shinshu Univ., Nagano, Japan
fDate :
9/1/1996 12:00:00 AM
Abstract :
Hexagonal Ba-ferrite films were prepared by a facing targets sputtering system at room temperature, 100 and 500°C and successively annealed in the air to crystallize. The films prepared at low temperature exhibit coercivities ranging from 1.0 to 3.8 kOe upon elevating the annealing temperature from 650 to 900°C. The read/write performance of Ba-ferrite rigid disk was evaluated by using a MIG type head and the recording density D50 was 90 kfrpi
Keywords :
annealing; barium compounds; coercive force; ferrites; hard discs; magnetic thin films; sputtered coatings; 20 to 500 C; 650 to 900 C; BaFe12O19; MIG type head; annealing; coercivity; crystallographic structure; facing targets sputtering; hexagonal Ba-ferrite film; read/write performance; recording density; rigid disk; Annealing; Coercive force; Crystallization; Crystallography; Disk recording; Magnetic films; Magnetic recording; Sputtering; Substrates; Temperature distribution;
Journal_Title :
Magnetics, IEEE Transactions on
