Temperature dependence of XANES spectra for ATiO3, A 2TiO4 and TiO2 compounds with structural phase transitions

Takafumi Hashimoto, Akira Yoshiasa, Maki Okube, Hiroki Okudera, Akihiko Nakatsuka

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

11 Citations (Scopus)

Abstract

Ti K-edge X-ray absorption near edge structure (XANES) spectra of various titanates was measured at various temperatures. The composition, structure and temperature dependence of XANES spectra was investigated especially on the phase transition. Ti atoms are located in TiO6 octahedral sites for the all samples. Ti K-edge XANES spectra change largely with different compositions, while the temperature dependence of XANES spectra is small in each compound even if undergoing structural phase transition. For the temperature dependence, the pre-edge intensity has two types of behavior. One is decreasing as temperatures increase, the other is increasing. The former is for PbTiO 3 and BaTiO3 perovskite and the later is for CaTiO 3 and SrTiO3 perovskite, Mg2TiO4 spinel and TiO2 rutile.

Original languageEnglish
Title of host publicationX-RAY ABSORPTION FINE STRUCTURE - XAFS13
Subtitle of host publication13th International Conference
Pages428-430
Number of pages3
DOIs
Publication statusPublished - 2007 Mar 27
EventX-RAY ABSORPTION FINE STRUCTURE - XAFS13: 13th International Conference - Stanford, CA, United States
Duration: 2006 Jul 92006 Jul 14

Publication series

NameAIP Conference Proceedings
Volume882
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

OtherX-RAY ABSORPTION FINE STRUCTURE - XAFS13: 13th International Conference
CountryUnited States
CityStanford, CA
Period06/7/906/7/14

Keywords

  • Pre-edge
  • Titanate
  • XANES

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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  • Cite this

    Hashimoto, T., Yoshiasa, A., Okube, M., Okudera, H., & Nakatsuka, A. (2007). Temperature dependence of XANES spectra for ATiO3, A 2TiO4 and TiO2 compounds with structural phase transitions. In X-RAY ABSORPTION FINE STRUCTURE - XAFS13: 13th International Conference (pp. 428-430). (AIP Conference Proceedings; Vol. 882). https://doi.org/10.1063/1.2644548