Domain Dynamics Study using Magneto-Optical Microscope Magnetometer(MOMM) with 400-nm Spatial Resolution.
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- Choe Sug-Bong
- Center for Nanospinics of Spintronic Materials and Department of Physics, Korea Advanced Institute of Science and Technology
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- Shin Sung-Chul
- Center for Nanospinics of Spintronic Materials and Department of Physics, Korea Advanced Institute of Science and Technology
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Description
A magneto-optical microscope magnetometer (MOMM) has been developed to grab the domain reversal patterns in real time under applying a magnetic field, as well as, to simultaneously measure the local magnetic properties with 400-nm spatial resolution. Using the system, the domain reversal behavior is revealed to change contrastingly between wall-motion and nucleation dominant with changing the multilayer structure of Co/Pd multilayers. From a quantitative analysis, the reversal ratio of the wall-motion speed over the nucleation rate is a governing parameter for the contrasting domain reversal dynamics. The activation volumes of the wall-motion and nucleation processes are found to be unequal, and the difference is closely related with the domain dynamics. Based on a Monte-Carlo simulation, both the macroscopic magnetic properties and the local magnetic variation are responsible for the contrasting domain reversal behavior.
Journal
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- Journal of the Magnetics Society of Japan
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Journal of the Magnetics Society of Japan 25 (3-2), 180-185, 2001
The Magnetics Society of Japan
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Details 詳細情報について
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- CRID
- 1390282680069682816
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- NII Article ID
- 110002810915
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- NII Book ID
- AN0031390X
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- ISSN
- 18804004
- 02850192
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- NDL BIB ID
- 5733096
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- NDL-Digital
- CiNii Articles
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- Abstract License Flag
- Disallowed