Velocity of domain walls in an epitaxial yttrium‐europium garnet film

Autor:	Y. S. Chen, F.B. Hagedorn, S.L. Blank, G. P. Vella‐Coleiro
Rok vydání:	1973
Předmět:	Physics Physics and Astronomy (miscellaneous) Condensed matter physics Magnetic domain business.industry Bubble chemistry.chemical_element Saturation velocity Yttrium Epitaxy Optics chemistry business Magnetic bubbles Europium Saturation (magnetic)
Zdroj:	Applied Physics Letters. 22:324-325
ISSN:	1077-3118 0003-6951
DOI:	10.1063/1.1654656
Popis:	Measurements of magnetic domain velocity by domain transport methods in an epitaxial Y2.4Eu0.6Ga1.2Fe3.8O12 film have yielded values as high as 2800 cm/sec with no sign of saturation. These measurements conflict with those reported recently by Callen et al., who deduced a saturation velocity of 1300 cm/sec from bubble collapse measurements made on films of the same composition. It is suggested that the discrepancy is due to the wall velocity reaching momentarily the Walker breakdown velocity in the bubble collapse technique, which then leads to a relatively immobile spin configuration similar to the one reported recently for hard magnetic bubbles.
Databáze:	OpenAIRE
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