Suppression of crack formation in garnet film by using a compound glass underlayer

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...

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Veröffentlicht in:	IEEE transactions on magnetics 2001-07, Vol.37 (4), p.2407-2410
Hauptverfasser:	Furuya, A., Baubet, C., Yoshikawa, H., Tanabe, T., Yamamoto, M., Tailhades, P., Bouet, L., Despax, C., Presmanes, L., Rousset, A.
Format:	Artikel
Sprache:	eng
Schlagworte:	Coercive force Condensed matter: electronic structure, electrical, magnetic, and optical properties Cracks Crystal structure Crystallization Exact sciences and technology Garnet films Garnets Glass Heat treatment Magnetic properties and materials Magnetic properties of monolayers and thin films Magnetic properties of surface, thin films and multilayers Magnetism Optical films Physics Rapid thermal annealing Recording Sputtering Substrates Temperature Thermal expansion Yield point
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Beschreibung
Zusammenfassung:	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.
ISSN:	0018-9464 1941-0069
DOI:	10.1109/20.951187