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IEICE TRANSACTIONS on Electronics

Environmental Temperature Effect on Magnetization Stability in Particulate Recording Media

Toshiyuki SUZUKI, Tomohiro MITSUGI

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Summary :

This paper reports the thermal stability of particulate media, which include Co-Fe oxide, CrO2, and thick and thin MP tapes. By measuring the time decay of magnetization at room temperature, fluctuation fields were obtained as a function of reverse applied field. It was clarified that the fluctuation field has a constant and minimum value when the reverse applied field is equal to coercivity. Minimum fluctuation fields for the four particulate tapes were measured at several environmental temperatures ranging from -75 to +100. It was also clarified that the fluctuation field normalized by remanence coercivity increases as the environmental temperature increases for all tapes, indicating that it is a good measure of thermal stability. Activation volumes were also deduced as a function of temperature.

Publication
IEICE TRANSACTIONS on Electronics Vol.E80-C No.9 pp.1168-1173
Publication Date
1997/09/25
Publicized
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DOI
Type of Manuscript
Special Section PAPER (Special Issue on High Density Information Recording Technologies)
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