Electronic absorption spectra of lanthanides in a molten chloride: II. Absorption characteristics of neodymium(III) in various molten chlorides

Toshiyuki Fujii; Takayuki Nagai; Nobuaki Sato; Osamu Shirai; Hajimu Yamana

doi:10.1016/j.jallcom.2004.10.013

Electronic absorption spectra of lanthanides in a molten chloride: II. Absorption characteristics of neodymium(III) in various molten chlorides

Toshiyuki Fujii, Takayuki Nagai, Nobuaki Sato, Osamu Shirai, Hajimu Yamana

Division of Process and System Engineering

Research output: Contribution to journal › Letter › peer-review

34 Citations (Scopus)

Abstract

Electronic absorption spectra of trivalent neodymium in LiCl-KCl eutectic, NaCl-2CsCl eutectic, CaCl₂, LiCl, CsCl and mixtures of these at various temperatures were measured, and the variation of the absorption bands, ⁴G_5/2, ²G_7/2 ← ⁴I_9/2, were carefully analyzed. The dependence of their molar absorptivity, oscillator strength, and the degree of the energy splitting on temperature and melt composition were determined. As a result, it was suggested that the NdCl₆ ^3- complex keeps its octahedral symmetry in the NaCl-2CsCl eutectic, while this symmetry is more distorted in LiCl and CaCl₂. Based on these data, the chemical status of NdCl ₆ ^3- complex in molten chlorides was discussed.

Original language	English
Pages (from-to)	L1-L5
Journal	Journal of Alloys and Compounds
Volume	393
Issue number	1-2
DOIs	https://doi.org/10.1016/j.jallcom.2004.10.013
Publication status	Published - 2005 May 3

Keywords

Electronic absorption spectrometry
Molar absorptivity
Molten salt
Neodymium
Oscillator strength

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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Electronic absorption spectra of lanthanides in a molten chloride : II. Absorption characteristics of neodymium(III) in various molten chlorides. / Fujii, Toshiyuki; Nagai, Takayuki; Sato, Nobuaki; Shirai, Osamu; Yamana, Hajimu.

In: Journal of Alloys and Compounds, Vol. 393, No. 1-2, 03.05.2005, p. L1-L5.

Research output: Contribution to journal › Letter › peer-review

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title = "Electronic absorption spectra of lanthanides in a molten chloride: II. Absorption characteristics of neodymium(III) in various molten chlorides",

abstract = "Electronic absorption spectra of trivalent neodymium in LiCl-KCl eutectic, NaCl-2CsCl eutectic, CaCl2, LiCl, CsCl and mixtures of these at various temperatures were measured, and the variation of the absorption bands, 4G5/2, 2G7/2 ← 4I9/2, were carefully analyzed. The dependence of their molar absorptivity, oscillator strength, and the degree of the energy splitting on temperature and melt composition were determined. As a result, it was suggested that the NdCl6 3- complex keeps its octahedral symmetry in the NaCl-2CsCl eutectic, while this symmetry is more distorted in LiCl and CaCl2. Based on these data, the chemical status of NdCl 6 3- complex in molten chlorides was discussed.",

keywords = "Electronic absorption spectrometry, Molar absorptivity, Molten salt, Neodymium, Oscillator strength",

author = "Toshiyuki Fujii and Takayuki Nagai and Nobuaki Sato and Osamu Shirai and Hajimu Yamana",

year = "2005",

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T1 - Electronic absorption spectra of lanthanides in a molten chloride

T2 - II. Absorption characteristics of neodymium(III) in various molten chlorides

AU - Fujii, Toshiyuki

AU - Nagai, Takayuki

AU - Sato, Nobuaki

AU - Shirai, Osamu

AU - Yamana, Hajimu

PY - 2005/5/3

Y1 - 2005/5/3

N2 - Electronic absorption spectra of trivalent neodymium in LiCl-KCl eutectic, NaCl-2CsCl eutectic, CaCl2, LiCl, CsCl and mixtures of these at various temperatures were measured, and the variation of the absorption bands, 4G5/2, 2G7/2 ← 4I9/2, were carefully analyzed. The dependence of their molar absorptivity, oscillator strength, and the degree of the energy splitting on temperature and melt composition were determined. As a result, it was suggested that the NdCl6 3- complex keeps its octahedral symmetry in the NaCl-2CsCl eutectic, while this symmetry is more distorted in LiCl and CaCl2. Based on these data, the chemical status of NdCl 6 3- complex in molten chlorides was discussed.

AB - Electronic absorption spectra of trivalent neodymium in LiCl-KCl eutectic, NaCl-2CsCl eutectic, CaCl2, LiCl, CsCl and mixtures of these at various temperatures were measured, and the variation of the absorption bands, 4G5/2, 2G7/2 ← 4I9/2, were carefully analyzed. The dependence of their molar absorptivity, oscillator strength, and the degree of the energy splitting on temperature and melt composition were determined. As a result, it was suggested that the NdCl6 3- complex keeps its octahedral symmetry in the NaCl-2CsCl eutectic, while this symmetry is more distorted in LiCl and CaCl2. Based on these data, the chemical status of NdCl 6 3- complex in molten chlorides was discussed.

KW - Electronic absorption spectrometry

KW - Molar absorptivity

KW - Molten salt

KW - Neodymium

KW - Oscillator strength

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