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Development and Application of Magneto‐Optical Microscope Using Polarization‐Modulation Technique
Author(s) -
Sato Katsuaki,
Ishibashi Takayuki
Publication year - 2008
Publication title -
ieej transactions on electrical and electronic engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.254
H-Index - 30
eISSN - 1931-4981
pISSN - 1931-4973
DOI - 10.1002/tee.20291
Subject(s) - microscope , polarization (electrochemistry) , materials science , optical microscope , magneto optical , magnetic force microscope , magnetic flux , magnetic domain , superconductivity , microscopy , optics , optoelectronics , magnetic field , condensed matter physics , physics , chemistry , magnetization , scanning electron microscope , composite material , quantum mechanics
Magneto‐optical (MO) effect is commonly used not only for an observation of magnetic domain structures, but also for a research of electrical structures in magnetic materials. In addition, distribution of a magnetic flux diverging from a magnetized sample and/or distribution of a current in the sample can be visualized with the help of an MO‐indicator film placed on the sample. In order to obtain quantitative information of the flux distribution we have developed an MO microscope using a polarization‐modulation technique. Utilizing the MO microscope with a magnetic garnet film as an indicator we have obtained a quantitative image of current distribution in a superconducting film. Copyright © 2008 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.