Title :
Suppression of crack formation in garnet film by using a compound glass underlayer
Author :
Furuya, A. ; Baubet, C. ; Yoshikawa, H. ; Tanabe, T. ; Yamamoto, M. ; Tailhades, P. ; Bouet, L. ; Despax, C. ; Presmanes, L. ; Rousset, A.
Author_Institution :
NTT Cyber Space Labs., Tokyo, Japan
fDate :
7/1/2001 12:00:00 AM
Abstract :
Garnet film made as a magneto-optical medium suffers from the problem of crack formation, caused by the high temperature of the garnet film fabrication process. We solved this problem by using a compound glass with a yield point lower than the garnet heat-treatment temperature as an underlayer. This successfully suppressed the formation of cracks in the heat-treated garnet film. As a result, we obtained a garnet film recording medium with excellent crystalline structure and high coercive force
Keywords :
coercive force; cracks; garnets; heat treatment; magnetic thin films; magneto-optical effects; yield point; coercive force; compound glass underlayer; crack formation; crystalline structure; garnet film; heat treatment; high temperature fabrication; magneto-optical medium; yield point; Coercive force; Crystallization; Garnet films; Glass; Optical films; Rapid thermal annealing; Sputtering; Substrates; Temperature; Thermal expansion;
Journal_Title :
Magnetics, IEEE Transactions on
