A study of low-frequency creep in bloch-wall permalloy films

A very high resolution Bitter pattern technique is used to study low-frequency creep in Bloch-wall Permalloy films. The basic wall motion consists of a sudden displacement when the hard-axis exciting field passes through two critical transition values. A net displacement per half-cycle or slow pulse...

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Veröffentlicht in:IEEE transactions on magnetics 1969-09, Vol.5 (3), p.247-252
Hauptverfasser: Bourne, H., Kusuda, T., Chia-Hsiung Lin
Format: Artikel
Sprache:eng
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Zusammenfassung:A very high resolution Bitter pattern technique is used to study low-frequency creep in Bloch-wall Permalloy films. The basic wall motion consists of a sudden displacement when the hard-axis exciting field passes through two critical transition values. A net displacement per half-cycle or slow pulse occurs in the presence of an easy-axis bias. The motion appears to be gyro-magnetically induced by the precession of the magnetization in the wall about a demagnetizing field perpendicular to the wall plane. The demagnetizing field may be produced by an instability in the relation between the hard-axis field and the magnetization in the domains on sides of the wall rather than in the wall.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.1969.1066491