XAFS analysis of molten rare-earth-alkali metal fluoride systems

Sou Watanabe, Ashok K. Adya, Yoshihiro Okamoto, N. Umesaki, T. Honma, H. Deguchi, M. Horiuchi, T. Yamamoto, S. Noguchi, K. Takase, A. Kajinami, T. Sakamoto, M. Hatcho, N. Kitamura, Hiroshi Akatsuka, Haruaki Matsuura

Research output: Contribution to journalArticle

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Abstract

X-ray absorption fine structure (XAFS) measurements on rare-earth-alkali metal fluoride systems (0.2 LnF3–0.8 MF: Ln = La, Ce, Nd, Sm; M = Li, Na, K) have been carried out at 300 and 1173 K. The local structures around rare-earth-ions in both the solid and liquid phases were evaluated by the curve-fitting analysis, involving anharmonic oscillation effects at the higher temperature. This study revealed that the nearest-neighbour Ln3+–F− distance and the corresponding coordination number of F− around Ln3+ in the molten state mainly depend on the lanthanide species rather than the size of the alkali metal ion.
Original languageEnglish
Pages (from-to)71-75
Number of pages5
JournalJournal of Alloys and Compounds
Volume408-412
DOIs
Publication statusPublished - 9 Feb 2006

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Alkali Metals
X ray absorption
Fluorides
Rare earths
Molten materials
Lanthanoid Series Elements
Curve fitting
Metal ions
Ions
Liquids
Temperature

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Watanabe, S., Adya, A. K., Okamoto, Y., Umesaki, N., Honma, T., Deguchi, H., ... Matsuura, H. (2006). XAFS analysis of molten rare-earth-alkali metal fluoride systems. Journal of Alloys and Compounds, 408-412, 71-75. https://doi.org/10.1016/j.jallcom.2005.04.105
Watanabe, Sou ; Adya, Ashok K. ; Okamoto, Yoshihiro ; Umesaki, N. ; Honma, T. ; Deguchi, H. ; Horiuchi, M. ; Yamamoto, T. ; Noguchi, S. ; Takase, K. ; Kajinami, A. ; Sakamoto, T. ; Hatcho, M. ; Kitamura, N. ; Akatsuka, Hiroshi ; Matsuura, Haruaki. / XAFS analysis of molten rare-earth-alkali metal fluoride systems. In: Journal of Alloys and Compounds. 2006 ; Vol. 408-412. pp. 71-75.
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abstract = "X-ray absorption fine structure (XAFS) measurements on rare-earth-alkali metal fluoride systems (0.2 LnF3–0.8 MF: Ln = La, Ce, Nd, Sm; M = Li, Na, K) have been carried out at 300 and 1173 K. The local structures around rare-earth-ions in both the solid and liquid phases were evaluated by the curve-fitting analysis, involving anharmonic oscillation effects at the higher temperature. This study revealed that the nearest-neighbour Ln3+–F− distance and the corresponding coordination number of F− around Ln3+ in the molten state mainly depend on the lanthanide species rather than the size of the alkali metal ion.",
author = "Sou Watanabe and Adya, {Ashok K.} and Yoshihiro Okamoto and N. Umesaki and T. Honma and H. Deguchi and M. Horiuchi and T. Yamamoto and S. Noguchi and K. Takase and A. Kajinami and T. Sakamoto and M. Hatcho and N. Kitamura and Hiroshi Akatsuka and Haruaki Matsuura",
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Watanabe, S, Adya, AK, Okamoto, Y, Umesaki, N, Honma, T, Deguchi, H, Horiuchi, M, Yamamoto, T, Noguchi, S, Takase, K, Kajinami, A, Sakamoto, T, Hatcho, M, Kitamura, N, Akatsuka, H & Matsuura, H 2006, 'XAFS analysis of molten rare-earth-alkali metal fluoride systems', Journal of Alloys and Compounds, vol. 408-412, pp. 71-75. https://doi.org/10.1016/j.jallcom.2005.04.105

XAFS analysis of molten rare-earth-alkali metal fluoride systems. / Watanabe, Sou; Adya, Ashok K.; Okamoto, Yoshihiro; Umesaki, N.; Honma, T.; Deguchi, H.; Horiuchi, M.; Yamamoto, T.; Noguchi, S.; Takase, K.; Kajinami, A.; Sakamoto, T.; Hatcho, M.; Kitamura, N.; Akatsuka, Hiroshi; Matsuura, Haruaki.

In: Journal of Alloys and Compounds, Vol. 408-412, 09.02.2006, p. 71-75.

Research output: Contribution to journalArticle

TY - JOUR

T1 - XAFS analysis of molten rare-earth-alkali metal fluoride systems

AU - Watanabe, Sou

AU - Adya, Ashok K.

AU - Okamoto, Yoshihiro

AU - Umesaki, N.

AU - Honma, T.

AU - Deguchi, H.

AU - Horiuchi, M.

AU - Yamamoto, T.

AU - Noguchi, S.

AU - Takase, K.

AU - Kajinami, A.

AU - Sakamoto, T.

AU - Hatcho, M.

AU - Kitamura, N.

AU - Akatsuka, Hiroshi

AU - Matsuura, Haruaki

PY - 2006/2/9

Y1 - 2006/2/9

N2 - X-ray absorption fine structure (XAFS) measurements on rare-earth-alkali metal fluoride systems (0.2 LnF3–0.8 MF: Ln = La, Ce, Nd, Sm; M = Li, Na, K) have been carried out at 300 and 1173 K. The local structures around rare-earth-ions in both the solid and liquid phases were evaluated by the curve-fitting analysis, involving anharmonic oscillation effects at the higher temperature. This study revealed that the nearest-neighbour Ln3+–F− distance and the corresponding coordination number of F− around Ln3+ in the molten state mainly depend on the lanthanide species rather than the size of the alkali metal ion.

AB - X-ray absorption fine structure (XAFS) measurements on rare-earth-alkali metal fluoride systems (0.2 LnF3–0.8 MF: Ln = La, Ce, Nd, Sm; M = Li, Na, K) have been carried out at 300 and 1173 K. The local structures around rare-earth-ions in both the solid and liquid phases were evaluated by the curve-fitting analysis, involving anharmonic oscillation effects at the higher temperature. This study revealed that the nearest-neighbour Ln3+–F− distance and the corresponding coordination number of F− around Ln3+ in the molten state mainly depend on the lanthanide species rather than the size of the alkali metal ion.

U2 - 10.1016/j.jallcom.2005.04.105

DO - 10.1016/j.jallcom.2005.04.105

M3 - Article

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JF - Journal of Alloys and Compounds

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Watanabe S, Adya AK, Okamoto Y, Umesaki N, Honma T, Deguchi H et al. XAFS analysis of molten rare-earth-alkali metal fluoride systems. Journal of Alloys and Compounds. 2006 Feb 9;408-412:71-75. https://doi.org/10.1016/j.jallcom.2005.04.105