Synthesis and characterization of Er3SmQ6 (Q=S, Se) and Er1.12Sm0.88Se3

Danielle L. Gray; Brandon A. Rodriguez; George H. Chan; Richard P. Van Duyne; James A. Ibers

doi:10.1016/j.jssc.2007.01.039

Synthesis and characterization of Er₃SmQ₆ (Q=S, Se) and Er_1.12Sm_0.88Se₃

Danielle L. Gray, Brandon A. Rodriguez, George H. Chan, Richard P. Van Duyne, James A. Ibers^*

^*Corresponding author for this work

Chemistry

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

6 Scopus citations

Abstract

The interlanthanide compounds Er₃SmS₆, Er₃SmSe₆, and Er_1.12Sm_0.88Se₃ have been synthesized from stoichiometric reactions of the elements in a KI salt flux at 1273, 1173, and 1123 K, respectively. Er₃SmS₆ and Er₃SmSe₆, which are isostructural and ordered, crystallize in space group P2₁/m in the ScEr₃S₆ structure type whereas Er_1.12Sm_0.88Se₃, in which the Er and Sm atoms are disordered, crystallizes in space group Pnma in the U₂S₃ structure type. Er₃SmS₆ is a paramagnet with a μ_eff=11.25(1) μ_B/mol. From optical measurements a direct band gap of 2.0 eV for light perpendicular to the (100) crystal face of Er₃SmSe₆ is derived whereas for isostructural Er₃SmS₆ an optical transition at 2.2-2.4 eV and a broad absorption peak at lower energies are observed.

Original language	English (US)
Pages (from-to)	1527-1532
Number of pages	6
Journal	Journal of Solid State Chemistry
Volume	180
Issue number	5
DOIs	https://doi.org/10.1016/j.jssc.2007.01.039
State	Published - May 1 2007

Keywords

Crystal structure
Interlanthanide chalcogenides
Magnetism
Optical transitions
Syntheses

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Condensed Matter Physics
Physical and Theoretical Chemistry
Inorganic Chemistry
Materials Chemistry

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title = "Synthesis and characterization of Er3SmQ6 (Q=S, Se) and Er1.12Sm0.88Se3",

abstract = "The interlanthanide compounds Er3SmS6, Er3SmSe6, and Er1.12Sm0.88Se3 have been synthesized from stoichiometric reactions of the elements in a KI salt flux at 1273, 1173, and 1123 K, respectively. Er3SmS6 and Er3SmSe6, which are isostructural and ordered, crystallize in space group P21/m in the ScEr3S6 structure type whereas Er1.12Sm0.88Se3, in which the Er and Sm atoms are disordered, crystallizes in space group Pnma in the U2S3 structure type. Er3SmS6 is a paramagnet with a μeff=11.25(1) μB/mol. From optical measurements a direct band gap of 2.0 eV for light perpendicular to the (100) crystal face of Er3SmSe6 is derived whereas for isostructural Er3SmS6 an optical transition at 2.2-2.4 eV and a broad absorption peak at lower energies are observed.",

keywords = "Crystal structure, Interlanthanide chalcogenides, Magnetism, Optical transitions, Syntheses",

author = "Gray, {Danielle L.} and Rodriguez, {Brandon A.} and Chan, {George H.} and {Van Duyne}, {Richard P.} and Ibers, {James A.}",

year = "2007",

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doi = "10.1016/j.jssc.2007.01.039",

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T1 - Synthesis and characterization of Er3SmQ6 (Q=S, Se) and Er1.12Sm0.88Se3

AU - Gray, Danielle L.

AU - Rodriguez, Brandon A.

AU - Chan, George H.

AU - Van Duyne, Richard P.

AU - Ibers, James A.

PY - 2007/5/1

Y1 - 2007/5/1

N2 - The interlanthanide compounds Er3SmS6, Er3SmSe6, and Er1.12Sm0.88Se3 have been synthesized from stoichiometric reactions of the elements in a KI salt flux at 1273, 1173, and 1123 K, respectively. Er3SmS6 and Er3SmSe6, which are isostructural and ordered, crystallize in space group P21/m in the ScEr3S6 structure type whereas Er1.12Sm0.88Se3, in which the Er and Sm atoms are disordered, crystallizes in space group Pnma in the U2S3 structure type. Er3SmS6 is a paramagnet with a μeff=11.25(1) μB/mol. From optical measurements a direct band gap of 2.0 eV for light perpendicular to the (100) crystal face of Er3SmSe6 is derived whereas for isostructural Er3SmS6 an optical transition at 2.2-2.4 eV and a broad absorption peak at lower energies are observed.

AB - The interlanthanide compounds Er3SmS6, Er3SmSe6, and Er1.12Sm0.88Se3 have been synthesized from stoichiometric reactions of the elements in a KI salt flux at 1273, 1173, and 1123 K, respectively. Er3SmS6 and Er3SmSe6, which are isostructural and ordered, crystallize in space group P21/m in the ScEr3S6 structure type whereas Er1.12Sm0.88Se3, in which the Er and Sm atoms are disordered, crystallizes in space group Pnma in the U2S3 structure type. Er3SmS6 is a paramagnet with a μeff=11.25(1) μB/mol. From optical measurements a direct band gap of 2.0 eV for light perpendicular to the (100) crystal face of Er3SmSe6 is derived whereas for isostructural Er3SmS6 an optical transition at 2.2-2.4 eV and a broad absorption peak at lower energies are observed.

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KW - Interlanthanide chalcogenides

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KW - Optical transitions

KW - Syntheses

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