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Dependence of wall dynamics on damping constant in bubble films

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4 Author(s)
S. Iwata ; Nagoya University, Nagoya, Japan. ; S. Isomura ; S. Shiomi ; S. Uchiyama

The dynamics of an isolated straight stripe domain is investigated in three samples with various damping constants. If an in-plane field is not present, the dynamic behavior of the stripe domain agrees well quantitatively with the horizontal Bloch line theory independent of the damping constant. If the in-plane field H_{//} is applied parallel to the walls, however, the experimental results gradually deviate from the theory as the damping constant becomes smaller or the in-plane field becomes larger. For example, the peak velocity is independent of H_{//} and the critical field for velocity breakdown decreases with increasing H_{//} for a film with very low damping.

Published in:

IEEE Transactions on Magnetics  (Volume:18 ,  Issue: 6 )