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SPring-8セミナー(第132回)

副題/演題 What we can learn about thin film magnetism from off-specular scattering
開催期間 2005年02月08日
開催場所 上坪講堂
主催 (財)高輝度光科学研究センター
形式 レクチャー(講演)
概要

日   時 : 2005年2月8日 10:00-11:30

講演者 : Sunil K. Sinha 教授
所   属 : University of California San Diego

講演要旨
  We shall discuss specular reflectivity and off-specular scattering of neutrons and X-rays from magnetic films. Both these techniques are capable of yielding information about the morphology of the chemical and magnetic roughness and the magnetic domain structure. The use of neutrons with polarization analysis enables the spatial distribution of different vector components of the magnetization to be determined, and the use of resonant magnetic X-ray scattering enables magnetization in a compound system to be determined element-selectively. Thus both these methods provide powerful and complementary new probes for studying magnetism at the nanoscopic level in a variety of systems such as those exhibiting exchange bias, giant magnetoresistance, spin injection, etc. We shall illustrate with an example of both techniques applied to an exchange bias system consisting of a single crystal of antiferromagnetic FeF2 capped with a ferromagnetic Co film, and what has been learned about how exchange bias works in such a system.

問い合わせ先 水木 純一郎 (PHS 3902) (財)高輝度光科学研究センター 利用研究促進部門
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最終変更日 2009-05-27 12:36