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Highly Field Sensitive (150 Oe) Quadri-Valued Magnetooptical Media for High-Speed Overwriting

1997; Institute of Physics; Volume: 36; Issue: 1S Linguagem: Inglês

10.1143/jjap.36.414

ISSN

1347-4065

Autores

H. Takao, Katsusuke Shimazaki, Norio Ohta, M. Yoshihiro, Nobuyuki Nagai, Susumu Imai,

Tópico(s)

Magnetic properties of thin films

Resumo

For high-density and high-speed magnetooptical (MO) recording, the use of magnetic multi-valued (MMV) MO media has been proposed. [rf:1] A quadri-valued recording has been achieved using this media and a field modulation recording method. For practical use of this media, it is important to reduce the critical magnetic field to minimize the applied field for realizing the quadri-valued recording. We have achieved reduction of the critical magnetic field down to 150 Oe using a new coupled film, TbFeCo/GdTbFeCo.

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