Characteristic temperature-derived hard bubble suppression

Details Characteristic temperature-derived hard bubble suppression Characteristic temperature-derived hard bubble suppression

1974-04-15

1976-03-23

Moffitt, James W.

Communications: electrical

Digital comparator systems

340174SC, 427128, G11C 1114

Patent

active

039463729

ABSTRACT:
Normal single wall magnetic or "bubble" domains are generated in bubble domain materials without generating hard bubble domains by selecting the composition based upon a predetermined minimum temperature. This hard bubble suppression is based upon the fact that a bubble domain material of a given composition has a characteristic temperature, T.sub.H, above which hard bubble domains are not generated. By selecting the composition to set T.sub.H equal to or less than the minimum ambient temperature for the bubble domain material, hard bubble generation is precluded. Means may be provided for maintaining the bubble domain material at or above T.sub.H.

REFERENCES:
patent: 3506974 (1970-04-01), Le Craw et al.
patent: 3711841 (1973-01-01), Geusic et al.
patent: 3745046 (1973-07-01), Mee et al.
IEEE Transactions on Magnetics "Magnetism of Rare Earth Elements, Alloys, and Compounds" by Rhyne et al.; Vol. Mag. 8, No. 1, 3/72, pp. 105 and 123-125.

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