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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Magneto-optic Kerr effect ： ウィキペディア英語版 Magneto-optic Kerr effect In physics the magneto-optic Kerr effect (MOKE) or the surface magneto-optic Kerr effect (SMOKE) is one of the magneto-optic effects. It describes the changes to light reflected from a magnetized surface. It is used in materials science research in devices such as the Kerr microscope, to investigate the magnetization structure of materials. ==Definition== Light that is reflected from a magnetized surface can change in both polarization and reflected intensity. The effect is similar to the Faraday effect: the Faraday effect describes changes to light transmitted through a magnetic material, while the Kerr effect describes changes to light reflected from a magnetic surface. Both effects result from the off-diagonal components of the dielectric tensor $\backslash varepsilon$. These off-diagonal components give the magneto-optic material an anisotropic permittivity, meaning that its permittivity is different in different directions. The permittivity affects the speed of light in a material: $v\_p\; =\; \backslash frac\{\backslash sqrt\{\backslash varepsilon\; \backslash mu\}\}$ where $v\_p$ is the velocity of light through the material, $\backslash varepsilon$ is the material permittivity, and $\backslash mu$ is the magnetic permeability; and thus the speed of light varies depending on its orientation. This causes fluctuations in the phase of polarized incident light. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Magneto-optic Kerr effect」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.