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Title: Synthesis and characterization of Er{sub 3}SmQ {sub 6} (Q=S, Se) and Er{sub 1.12}Sm{sub 0.88}Se{sub 3}

Abstract

The interlanthanide compounds Er{sub 3}SmS{sub 6}, Er{sub 3}SmSe{sub 6}, and Er{sub 1.12}Sm{sub 0.88}Se{sub 3} have been synthesized from stoichiometric reactions of the elements in a KI salt flux at 1273, 1173, and 1123 K, respectively. Er{sub 3}SmS{sub 6} and Er{sub 3}SmSe{sub 6}, which are isostructural and ordered, crystallize in space group P2{sub 1}/m in the ScEr{sub 3}S{sub 6} structure type whereas Er{sub 1.12}Sm{sub 0.88}Se{sub 3}, in which the Er and Sm atoms are disordered, crystallizes in space group Pnma in the U{sub 2}S{sub 3} structure type. Er{sub 3}SmS{sub 6} is a paramagnet with a {mu} {sub eff}=11.25(1) {mu}{sub B}/mol. From optical measurements a direct band gap of 2.0 eV for light perpendicular to the (100) crystal face of Er{sub 3}SmSe{sub 6} is derived whereas for isostructural Er{sub 3}SmS{sub 6} an optical transition at 2.2-2.4 eV and a broad absorption peak at lower energies are observed. - Graphical abstract: The structure of Er{sub 3}SmSe{sub 6} viewed approximately down [010].

Authors:
 [1];  [1];  [1];  [1];  [2]
  1. Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3113 (United States)
  2. Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208-3113 (United States), E-mail: ibers@chem.northwestern.edu
Publication Date:
OSTI Identifier:
21015804
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Solid State Chemistry; Journal Volume: 180; Journal Issue: 5; Other Information: DOI: 10.1016/j.jssc.2007.01.039; PII: S0022-4596(07)00065-5; Copyright (c) 2007 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ABSORPTION; CRYSTALS; ERBIUM COMPOUNDS; EV RANGE; MAGNETISM; MONOCLINIC LATTICES; ORTHORHOMBIC LATTICES; POTASSIUM IODIDES; SAMARIUM COMPOUNDS; SELENIDES; SPACE GROUPS; SULFIDES; SURFACES; SYNTHESIS

Citation Formats

Gray, Danielle L., Rodriguez, Brandon A., Chan, George H., Van Duyne, Richard P., and Ibers, James A. Synthesis and characterization of Er{sub 3}SmQ {sub 6} (Q=S, Se) and Er{sub 1.12}Sm{sub 0.88}Se{sub 3}. United States: N. p., 2007. Web. doi:10.1016/j.jssc.2007.01.039.
Gray, Danielle L., Rodriguez, Brandon A., Chan, George H., Van Duyne, Richard P., & Ibers, James A. Synthesis and characterization of Er{sub 3}SmQ {sub 6} (Q=S, Se) and Er{sub 1.12}Sm{sub 0.88}Se{sub 3}. United States. doi:10.1016/j.jssc.2007.01.039.
Gray, Danielle L., Rodriguez, Brandon A., Chan, George H., Van Duyne, Richard P., and Ibers, James A. Tue . "Synthesis and characterization of Er{sub 3}SmQ {sub 6} (Q=S, Se) and Er{sub 1.12}Sm{sub 0.88}Se{sub 3}". United States. doi:10.1016/j.jssc.2007.01.039.
@article{osti_21015804,
title = {Synthesis and characterization of Er{sub 3}SmQ {sub 6} (Q=S, Se) and Er{sub 1.12}Sm{sub 0.88}Se{sub 3}},
author = {Gray, Danielle L. and Rodriguez, Brandon A. and Chan, George H. and Van Duyne, Richard P. and Ibers, James A.},
abstractNote = {The interlanthanide compounds Er{sub 3}SmS{sub 6}, Er{sub 3}SmSe{sub 6}, and Er{sub 1.12}Sm{sub 0.88}Se{sub 3} have been synthesized from stoichiometric reactions of the elements in a KI salt flux at 1273, 1173, and 1123 K, respectively. Er{sub 3}SmS{sub 6} and Er{sub 3}SmSe{sub 6}, which are isostructural and ordered, crystallize in space group P2{sub 1}/m in the ScEr{sub 3}S{sub 6} structure type whereas Er{sub 1.12}Sm{sub 0.88}Se{sub 3}, in which the Er and Sm atoms are disordered, crystallizes in space group Pnma in the U{sub 2}S{sub 3} structure type. Er{sub 3}SmS{sub 6} is a paramagnet with a {mu} {sub eff}=11.25(1) {mu}{sub B}/mol. From optical measurements a direct band gap of 2.0 eV for light perpendicular to the (100) crystal face of Er{sub 3}SmSe{sub 6} is derived whereas for isostructural Er{sub 3}SmS{sub 6} an optical transition at 2.2-2.4 eV and a broad absorption peak at lower energies are observed. - Graphical abstract: The structure of Er{sub 3}SmSe{sub 6} viewed approximately down [010].},
doi = {10.1016/j.jssc.2007.01.039},
journal = {Journal of Solid State Chemistry},
number = 5,
volume = 180,
place = {United States},
year = {Tue May 15 00:00:00 EDT 2007},
month = {Tue May 15 00:00:00 EDT 2007}
}