Magneto-optic observation of domain motions and instabilities in small permalloy elements
Domain wall networks, their motions and transformations are studied in response to changing magnetic fields (≤ 30 Hz) in small, rectangular, easy-axis and hard-axis stripes of Permalloy film (375Å). Many of the effects reported previously using Bitter solution or Lorentz techniques are now seen opti...
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Published in | IEEE transactions on magnetics Vol. 22; no. 5; pp. 772 - 774 |
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Main Authors | , |
Format | Journal Article Conference Proceeding |
Language | English |
Published |
New York, NY
IEEE
01.09.1986
Institute of Electrical and Electronics Engineers |
Subjects | |
Online Access | Get full text |
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Summary: | Domain wall networks, their motions and transformations are studied in response to changing magnetic fields (≤ 30 Hz) in small, rectangular, easy-axis and hard-axis stripes of Permalloy film (375Å). Many of the effects reported previously using Bitter solution or Lorentz techniques are now seen optically in real time with a wide-field, high resolution, polarized, laser magneto-optic microscope system. This initial study reports optical detection of transformations between domain configurations such as the Landau-Lifshitz structure (L.L.), L.L. plus diamond, concertina, and bellows. Wall cluster and subcluster artifacts are visible and may be seen to generate (annihilate) or bifurcate (amalgamate) during network motion. |
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Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
ISSN: | 0018-9464 1941-0069 |
DOI: | 10.1109/TMAG.1986.1064551 |