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

doi:10.1063/1.2644548

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

Materials Development Division

Research output: Chapter in Book/Report/Conference proceeding › Conference 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 language	English
Title of host publication	X-RAY ABSORPTION FINE STRUCTURE - XAFS13
Subtitle of host publication	13th International Conference
Pages	428-430
Number of pages	3
DOIs	https://doi.org/10.1063/1.2644548
Publication status	Published - 2007
Event	X-RAY ABSORPTION FINE STRUCTURE - XAFS13: 13th International Conference - Stanford, CA, United States Duration: 2006 Jul 9 → 2006 Jul 14

Publication series

Name	AIP Conference Proceedings
Volume	882
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Other

Other	X-RAY ABSORPTION FINE STRUCTURE - XAFS13: 13th International Conference
Country	United States
City	Stanford, CA
Period	06/7/9 → 06/7/14

Keywords

Pre-edge
Titanate
XANES

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1063/1.2644548

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Temperature dependence of XANES spectra for ATiO₃, A ₂TiO₄ and TiO₂ compounds with structural phase transitions. / Hashimoto, Takafumi; Yoshiasa, Akira; Okube, Maki; Okudera, Hiroki; Nakatsuka, Akihiko.

X-RAY ABSORPTION FINE STRUCTURE - XAFS13: 13th International Conference. 2007. p. 428-430 (AIP Conference Proceedings; Vol. 882).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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. AIP Conference Proceedings, vol. 882, pp. 428-430, X-RAY ABSORPTION FINE STRUCTURE - XAFS13: 13th International Conference, Stanford, CA, United States, 06/7/9. https://doi.org/10.1063/1.2644548

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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.",

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AU - Hashimoto, Takafumi

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AU - Nakatsuka, Akihiko

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N2 - 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.

AB - 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.

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