File:Magneto optics versus MFM.png

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Русский: Два метода визуализации магнитных доменных структур: поляризационная оптическая микроскопия – эффект Фарадея и магнитно-силовая микроскопия (МСМ).

Образец – пленка феррита-граната состава (LuBi)3Fe5O12 толщиной 10 мкм. Размер магнитооптического изображения 73 на 54 мкм. Выделен участок размером 26 на 26 мкм, для которого на вставке представлено МСМ изображение. Данные получены с помощью атомно-силового микроскопа SmartSPM, AIST-NT, оснащенного поляризационной оптикой высокого разрешения и дополнительным осветителем, позволяющим наблюдать оптическое изображение в проходящем свете.

Методы визуализации различаются как пространственным разрешением, так и механизмом формирования изображений. Магнитооптическое изображение обусловлено структурой распределения намагниченности в основном объеме пленке. МСМ изображение отражает поля рассеяния, обусловленные доменами в приповерхностном слое.
English: Two methods of imaging the magnetic domain structures: polarizing optical microscopy — Faraday effect and magnetic force microscopy (MFM). The sample is the film of composition (LuBi)3Fe5O12, thickness of 10 microns. The size of the magneto-optical image is 73 µm by 54 µm. The marked area is 26 µm x 26 µm, for which MFM image is represented in the inset. The data were obtained using an atomic force microscope SmartSPM, AIST-NT, equipped with high-resolution polarization optics and an additional illuminator allows observing a transmitted light optical image. Imaging techniques differ in both spatial resolution and imaging mechanism. Magneto-optical image depends on the structure of the magnetization distribution in the bulk of the film. MFM image reflects the stray field caused by the domains in the surface layer.
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Author Temiryazev

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