X-ray fluorescence holographic study on a single-crystal thin film of a rewritable optical media

S. Hosokawa, K. Hayashi, N. Happo, K. Horii, T. Ozaki, P. Fons, A. V. Kolobov, J. Tominaga

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this article, we discuss X-ray fluorescence holography (XFH) using a third-generation synchrotron radiation facility through an application to a DVD-RAM material thin film. Three-dimensional atomic images were obtained at 100 K around the Ge atoms in a Ge2Sb2Te5 single-crystal thin film by means of XFH technique at the beamline BL37XU of the SPring-8 to clarify the high-speed writing and erasing mechanism of this DVD material. From the obtained XFH images, it was concluded that the single-crystal thin film has a mixture of rocksalt and zinc-blende structures. In addition, the images indicate large distortions associated with the existence of vacancies of the Ge(Sb) site. The present XFH results are in good agreement with the previous XAFS results, which has predicted a phase transition due to an umbrella flip motion of the Ge atoms.

Original languageEnglish
Title of host publicationSYNCHROTRON RADIATION INSTRUMENTATION
Subtitle of host publicationNinth International Conference on Synchrotron Radiation Instrumentation
Pages1309-1312
Number of pages4
DOIs
Publication statusPublished - 2007 Mar 26
Externally publishedYes
EventSYNCHROTRON RADIATION INSTRUMENTATION: 9th International Conference on Synchrotron Radiation Instrumentation - Daegu, Korea, Republic of
Duration: 2006 May 282006 Jun 28

Publication series

NameAIP Conference Proceedings
Volume879
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

ConferenceSYNCHROTRON RADIATION INSTRUMENTATION: 9th International Conference on Synchrotron Radiation Instrumentation
CountryKorea, Republic of
CityDaegu
Period06/5/2806/6/28

Keywords

  • Chalcogenides
  • Imaging
  • Phase transition
  • Synchrotron radiation
  • Thin film

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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  • Cite this

    Hosokawa, S., Hayashi, K., Happo, N., Horii, K., Ozaki, T., Fons, P., Kolobov, A. V., & Tominaga, J. (2007). X-ray fluorescence holographic study on a single-crystal thin film of a rewritable optical media. In SYNCHROTRON RADIATION INSTRUMENTATION: Ninth International Conference on Synchrotron Radiation Instrumentation (pp. 1309-1312). (AIP Conference Proceedings; Vol. 879). https://doi.org/10.1063/1.2436304