TY - JOUR
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.
N1 - Funding Information:
We are grateful to Mr. Leif J. Sherry for his help with the single-crystal optical measurements. We thank Mr. Jiha Sung and Prof. Kenneth G. Spears for the use of their NIR spectrometer. This research was supported in part by the Department of Energy BES Grant ER-15522. Research conducted by G.H.C. was also supported by a Northwestern University MRSEC Fellowship. Use was made of the Central Facilities supported by the MRSEC program of the National Science Foundation (DMR00-76097) at the Materials Research Center of Northwestern University.
PY - 2007/5
Y1 - 2007/5
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.
KW - Crystal structure
KW - Interlanthanide chalcogenides
KW - Magnetism
KW - Optical transitions
KW - Syntheses
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U2 - 10.1016/j.jssc.2007.01.039
DO - 10.1016/j.jssc.2007.01.039
M3 - Article
AN - SCOPUS:34248567067
SN - 0022-4596
VL - 180
SP - 1527
EP - 1532
JO - Journal of Solid State Chemistry
JF - Journal of Solid State Chemistry
IS - 5
ER -