Site-sensitive X-ray photoelectron spectroscopy of Fe3O4 by photoelectron diffraction |
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Authors: | Yusuke Hashimoto Munetaka Taguchi Shun Fukami Hiroki Momono Tomohiro Matsushita Hiroyuki Matsuda Fumihiko Matsui Hiroshi Daimon |
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Institution: | 1. Materials Science, Nara Institute of Science and Technology (NAIST), Nara, Japan;2. Japan Synchrotron Radiation Research Institute (JASRI/SPring-8), Hyogo, Japan |
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Abstract: | Fe 2p core-level photoelectron spectra of magnetite were measured using soft X-ray and hard X-ray, and its emission angle dependence was investigated. The photoelectron diffraction pattern from different atomic sites differs because the atomic arrangement surrounding each site is different. By selecting the forward-focusing-peak (FFP) directions characteristic to each atomic site and measuring the kinetic energy dependence of the FFP intensities at the Fe 2p core-level range, we succeed in detecting the variation of the peak intensity of Fe 2p core-level spectra at different emission directions. This result, consistent with recent results, suggests that the lower-binding-energy peak of the Fe 2p core-level spectrum may be assigned as the B site component. |
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Keywords: | magnetic materials mixed valence photoelectron diffraction |
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