Published March 15, 2005
| Published
Journal Article
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Domain-wall dynamics at micropatterned constrictions in ferromagnetic (Ga,Mn)As epilayers
Chicago
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Abstract
The influence of sub-µm geometric constrictions on 90° magnetic domain-wall nucleation and propagation in stripes of ferromagnetic (Ga0.95,Mn0.05)As was explored. Measurements of the magnetic switching behavior were performed during ramping of an external magnetic field at constant rate and at constant field in the time domain. Demagnetizing fields are found to play a crucial role in the switching behavior around the region of the constriction. Depending on the sample's initial magnetization the constriction can either assist domain-wall nucleation or hinder its propagation.
Additional Information
© 2005 American Institute of Physics. Received 2 August 2004; accepted 19 December 2004; published online 4 March 2005. We are grateful for financial support from the DARPA/SPINS Program and the Deutsche Forschungsgemeinschaft. For valuable discussions we would like to thank Professor P. E. Wigen.Attached Files
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Additional details
- Eprint ID
- 3531
- Resolver ID
- CaltechAUTHORS:HONjap95
- Defense Advanced Research Projects Agency (DARPA)
- Deutsche Forschungsgemeinschaft (DFG)
- Created
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2006-06-12Created from EPrint's datestamp field
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2021-11-08Created from EPrint's last_modified field