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Magneto-Optical Recording Performance and Fabrication Conditions in Magneto-Optical Recording Disks

Published online by Cambridge University Press:  21 February 2011

Takehiko Yorozu
Affiliation:
Magnetics Div., Central Research Lab.
Takashi Satoh
Affiliation:
New Business Div.; Sumitomo Metal Mining 3-18-5 Nakakokubun, Ichikawa, Chiba, Japan 272
Yukinobu Yoneyama
Affiliation:
New Business Div.; Sumitomo Metal Mining 3-18-5 Nakakokubun, Ichikawa, Chiba, Japan 272
Hiroyuki Tanaka
Affiliation:
New Business Div.; Sumitomo Metal Mining 3-18-5 Nakakokubun, Ichikawa, Chiba, Japan 272
Yuji Takatsuka
Affiliation:
New Business Div.; Sumitomo Metal Mining 3-18-5 Nakakokubun, Ichikawa, Chiba, Japan 272
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Abstract

In order to clarify the correlations between recording performances and fabrication processes in magneto-optical recording media, magnetic switching processes of TbFeCo films are studied. For a trilayer structure, with a thick magnetic layer, carrier to noise ratio(CNR) indicates maximum value for the composition with compensation temperature(Tcomp) being near room temperature. In a quadrilayer structure, on the other hand, where a thinner magnetic layer and Al reflector are employed, CNR indicates maximum vaiue for transition-metal(TM) rich composition with iower coercive force. Studies are made to interpret the results In terms of the difference in magnetic properties.

Type
Research Article
Copyright
Copyright © Materials Research Society 1989

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References

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