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New stable state of bubbles containing Bloch lines

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2 Author(s)
Suzuki, R. ; Central Research Laboratory, Hitachi, Ltd., Kokubunji, Tokyo, Japan ; Sugita, Y.

A new kind of bubble having two stable states for a bias field HBhas been found in thin garnet films. The bubble becomes smaller with increasing HBand disappears abruptly at some critical field H_{C1} . However, it does not collapse at H_{C1} . When HBis lowered, it comes into sight suddenly at another critical field H_{C2} . This means that for HBbetween H_{C1} and H_{C2} the bubble has two stable states, one for a large bubble and the other for an unobservably small bubble. This has been well explained in terms of the stability of bubbles containing a definite number of Bloch lines.

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Magnetics, IEEE Transactions on  (Volume:14 ,  Issue: 4 )