Variation of the magnetic domain structure with reversal field (invited)

Autor:	Robert Stamps, Robert C. Woodward, Robert Street, A.M. Lance
Rok vydání:	2003
Předmět:	Materials science Condensed matter physics Magnetic domain Demagnetizing field General Physics and Astronomy equipment and supplies Magnetization Paramagnetism Magnetic anisotropy Domain wall (magnetism) Remanence sense organs Single domain human activities
Zdroj:	Journal of Applied Physics. 93:6567-6571
ISSN:	1089-7550 0021-8979
DOI:	10.1063/1.1557654
Popis:	A rate dependence of the magnetic domain structure has been observed in a Pt/Co multilayer. The form of the domain structure as a function of the rate of change of magnetization was studied using nanosecond pulsed magnetic fields. At low fields the magnetization pattern consists of a dendritic like growth of the domains. As the magnitude of the pulse field is increased the patterns change to a more circular structure with smooth boundaries. The change in structure can be quantified and is discussed in terms of a field dependence where different behaviors can be clearly identified. The structure observed results from a narrowing of the distribution of energy barriers to reversal as the field is increased.
Databáze:	OpenAIRE
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