Preparation and structure of quaternary mixed sulphide Li(Lu,M)S2 (M=U,Ce)

Nobuaki Sato; Hidetoshi Masuda; Takeo Fujino; Kohta Yamada; Makoto Wakeshima

doi:10.1016/S0925-8388(98)00094-2

Preparation and structure of quaternary mixed sulphide Li(Lu,M)S₂ (M=U,Ce)

Nobuaki Sato, Hidetoshi Masuda, Takeo Fujino, Kohta Yamada, Makoto Wakeshima

Division of Process and System Engineering

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

Abstract

The Li(Lu,M)S₂ (M=U,Ce) compounds were prepared by the reaction of the weighed mixture of Li₂CO₃, Lu₂O₃ and UO₂ or CeO₂ in a CS₂+N₂ gas mixture at 800°C for 2 h. It was proved that a series of Li(Lu_yU_1-y)S₂ compounds showed an NaCl-type structure in a wide range of y values from 0.2 to 0.8, while the ternary sulphides LiLuS₂ and Li₂US₃ crystallized in hexagonal α-NaFeO₂-type structure (R3m) and monoclinic structure (C2/m), respectively. The Rietveld refinement showed that the compound was Li_1.5Lu_0.5U_0.5S_2.5 with cubic lattice parameter 5.420 A° and that the space group was Fm3m with the final R_I value of 0.027. A series of Li(Lu_yCe_1-y)S₂ compounds also showed the NaCl structure in a range of y values from 0.4 to 0.8, though LiCeS₂ adopts a Th₃P₄ structure. The final R_I value for the compound Li_1.17Lu_0.5Ce_0.5S_2.17 with cubic lattice parameter 5.531 Å was 0.052 after the Rietveld refinement.

Original language	English
Pages (from-to)	382-385
Number of pages	4
Journal	Journal of Alloys and Compounds
Volume	271-273
DOIs	https://doi.org/10.1016/S0925-8388(98)00094-2
Publication status	Published - 1998 Jun 12

Keywords

Rietveld refinement
Structure
Ternary sulphides

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

Access to Document

10.1016/S0925-8388(98)00094-2

Cite this

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title = "Preparation and structure of quaternary mixed sulphide Li(Lu,M)S2 (M=U,Ce)",

abstract = "The Li(Lu,M)S2 (M=U,Ce) compounds were prepared by the reaction of the weighed mixture of Li2CO3, Lu2O3 and UO2 or CeO2 in a CS2+N2 gas mixture at 800°C for 2 h. It was proved that a series of Li(LuyU1-y)S2 compounds showed an NaCl-type structure in a wide range of y values from 0.2 to 0.8, while the ternary sulphides LiLuS2 and Li2US3 crystallized in hexagonal α-NaFeO2-type structure (R3m) and monoclinic structure (C2/m), respectively. The Rietveld refinement showed that the compound was Li1.5Lu0.5U0.5S2.5 with cubic lattice parameter 5.420 A° and that the space group was Fm3m with the final RI value of 0.027. A series of Li(LuyCe1-y)S2 compounds also showed the NaCl structure in a range of y values from 0.4 to 0.8, though LiCeS2 adopts a Th3P4 structure. The final RI value for the compound Li1.17Lu0.5Ce0.5S2.17 with cubic lattice parameter 5.531 {\AA} was 0.052 after the Rietveld refinement.",

keywords = "Rietveld refinement, Structure, Ternary sulphides",

author = "Nobuaki Sato and Hidetoshi Masuda and Takeo Fujino and Kohta Yamada and Makoto Wakeshima",

year = "1998",

month = jun,

day = "12",

doi = "10.1016/S0925-8388(98)00094-2",

language = "English",

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journal = "Journal of Alloys and Compounds",

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T1 - Preparation and structure of quaternary mixed sulphide Li(Lu,M)S2 (M=U,Ce)

AU - Sato, Nobuaki

AU - Masuda, Hidetoshi

AU - Fujino, Takeo

AU - Yamada, Kohta

AU - Wakeshima, Makoto

PY - 1998/6/12

Y1 - 1998/6/12

N2 - The Li(Lu,M)S2 (M=U,Ce) compounds were prepared by the reaction of the weighed mixture of Li2CO3, Lu2O3 and UO2 or CeO2 in a CS2+N2 gas mixture at 800°C for 2 h. It was proved that a series of Li(LuyU1-y)S2 compounds showed an NaCl-type structure in a wide range of y values from 0.2 to 0.8, while the ternary sulphides LiLuS2 and Li2US3 crystallized in hexagonal α-NaFeO2-type structure (R3m) and monoclinic structure (C2/m), respectively. The Rietveld refinement showed that the compound was Li1.5Lu0.5U0.5S2.5 with cubic lattice parameter 5.420 A° and that the space group was Fm3m with the final RI value of 0.027. A series of Li(LuyCe1-y)S2 compounds also showed the NaCl structure in a range of y values from 0.4 to 0.8, though LiCeS2 adopts a Th3P4 structure. The final RI value for the compound Li1.17Lu0.5Ce0.5S2.17 with cubic lattice parameter 5.531 Å was 0.052 after the Rietveld refinement.

AB - The Li(Lu,M)S2 (M=U,Ce) compounds were prepared by the reaction of the weighed mixture of Li2CO3, Lu2O3 and UO2 or CeO2 in a CS2+N2 gas mixture at 800°C for 2 h. It was proved that a series of Li(LuyU1-y)S2 compounds showed an NaCl-type structure in a wide range of y values from 0.2 to 0.8, while the ternary sulphides LiLuS2 and Li2US3 crystallized in hexagonal α-NaFeO2-type structure (R3m) and monoclinic structure (C2/m), respectively. The Rietveld refinement showed that the compound was Li1.5Lu0.5U0.5S2.5 with cubic lattice parameter 5.420 A° and that the space group was Fm3m with the final RI value of 0.027. A series of Li(LuyCe1-y)S2 compounds also showed the NaCl structure in a range of y values from 0.4 to 0.8, though LiCeS2 adopts a Th3P4 structure. The final RI value for the compound Li1.17Lu0.5Ce0.5S2.17 with cubic lattice parameter 5.531 Å was 0.052 after the Rietveld refinement.

KW - Rietveld refinement

KW - Structure

KW - Ternary sulphides

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