TITLE

Observation of magnetization reversal of thin-film permalloy nanostructures using ballistic electron magnetic microscopy

AUTHOR(S)
Rippard, W. H.; Perrella, A. C.; Chalsani, P.; Albert, F. J.; Katine, J. A.; Buhrman, R. A.
PUB. DATE
August 2000
SOURCE
Applied Physics Letters;8/28/2000, Vol. 77 Issue 9
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We have imaged the magnetization reversal process of thin-film permalloy (Ni[sub 80]Fe[sub 20]) nanostructures using ballistic electron magnetic microscopy. Their switching behavior is often influenced by the formation of end domains and the subsequent domain-wall propagation under application of a magnetic field. Occasionally, this process leads to the formation of a 360° domain wall that is stable in fields which would otherwise switch the structure. The resulting state of the nanostructure in zero-applied field is very different from the near-single-domain state typically observed. The magnetization of the structure can show abrupt changes in a fixed magnetic field. © 2000 American Institute of Physics.
ACCESSION #
4415124

 

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