Anomalous x-ray scattering studies of functional disordered materials

S. Kohara, H. Tajiri, C. H. Song, K. Ohara, L. Temleitner, K. Sugimito, A. Fujiwara, L. Pusztai, T. Usuki, S. Hosokawa, Y. Benino, N. Kitamura, K. Fukumi

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Abstract

We have developed anomalous x-ray scattering (AXS) spectrometers, that employ intrinsic Ge detectors and crystal analyzers, at SPring-8. The use of LiF analyzer crystal provides us with an energy resolution of ∼ 12 eV. Furthermore, it has been established that the use of AXS technique is essential to reveal the relationship between the atomic structure and its function of a fast phase-change material, Ge2Sb2Te5. We were able to address the issue of why the amorphous phase of fast phase change materials is stable at room temperature for a long time despite the fact that it can rapidly transform to the crystalline phase by using a combination of AXS and large scale density functional theory-based molecular dynamics simulations.

Original languageEnglish
Article number012014
JournalJournal of Physics: Conference Series
Volume502
Issue number1
DOIs
Publication statusPublished - Jan 1 2014
Event1st Conference on Light and Particle Beams in Materials Science 2013, LPBMS 2013 - Tsukuba, Japan
Duration: Aug 29 2013Aug 31 2013

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Kohara, S., Tajiri, H., Song, C. H., Ohara, K., Temleitner, L., Sugimito, K., Fujiwara, A., Pusztai, L., Usuki, T., Hosokawa, S., Benino, Y., Kitamura, N., & Fukumi, K. (2014). Anomalous x-ray scattering studies of functional disordered materials. Journal of Physics: Conference Series, 502(1), [012014]. https://doi.org/10.1088/1742-6596/502/1/012014