TY - JOUR
T1 - Syntheses, structure, and magnetic properties of several LnYbQ3 chalcogenides, Q=S, Se
AU - Mitchell, Kwasi
AU - Somers, Rebecca C.
AU - Huang, Fu Qiang
AU - Ibers, James A.
N1 - Funding Information:
This research was supported by National Science Foundation Grant DMR00-96676 and a Ford Predoctoral Fellowship to K.M. 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 - 2004/3
Y1 - 2004/3
N2 - The six LnYbQ3 compounds β-LaYbS3, LaYbSe 3, CeYbSe3, PrYbSe3, NdYbSe3, and SmYbSe3 have been synthesized from high-temperature solid-state reactions of the constituent elements at 1223K. The compounds are isostructural to UFeS3 and crystallize in the space group Cmcm of the orthorhombic system with four formula units in a cell. Cell constants (Å) at 153K are: β-LaYbS3, 3.9238(8), 12.632(3), 9.514(2); LaYbSe3, 4.0616(8), 13.094(3), 9.932(2); CeYbSe3, 4.0234(5), 13.065(2), 9.885(1); PrYbSe3, 4.0152(5), 13.053(2), 9.868(1); NdYbSe 3, 4.0015(6), 13.047(2), 9.859(1); SmYbSe3, 3.9780(9), 13.040(3), 9.860(2). The structure is composed of layers of YbQ6 (Q= S or Se) octahedra that alternate with layers of LnQ8 bicapped trigonal prisms along the b-axis. Because there are no Q-Q bonds in the structure the formal oxidation states of Ln/Yb/Q are 3+/3+/2-. Magnetic susceptibility measurements indicate that CeYbSe3 and SmYbSe 3 are Curie-Weiss paramagnets over the temperature range 5-300K.
AB - The six LnYbQ3 compounds β-LaYbS3, LaYbSe 3, CeYbSe3, PrYbSe3, NdYbSe3, and SmYbSe3 have been synthesized from high-temperature solid-state reactions of the constituent elements at 1223K. The compounds are isostructural to UFeS3 and crystallize in the space group Cmcm of the orthorhombic system with four formula units in a cell. Cell constants (Å) at 153K are: β-LaYbS3, 3.9238(8), 12.632(3), 9.514(2); LaYbSe3, 4.0616(8), 13.094(3), 9.932(2); CeYbSe3, 4.0234(5), 13.065(2), 9.885(1); PrYbSe3, 4.0152(5), 13.053(2), 9.868(1); NdYbSe 3, 4.0015(6), 13.047(2), 9.859(1); SmYbSe3, 3.9780(9), 13.040(3), 9.860(2). The structure is composed of layers of YbQ6 (Q= S or Se) octahedra that alternate with layers of LnQ8 bicapped trigonal prisms along the b-axis. Because there are no Q-Q bonds in the structure the formal oxidation states of Ln/Yb/Q are 3+/3+/2-. Magnetic susceptibility measurements indicate that CeYbSe3 and SmYbSe 3 are Curie-Weiss paramagnets over the temperature range 5-300K.
KW - Chalcogenide
KW - Crystal structure
KW - Magnetic properties
KW - Rare-earth element
KW - Solid-state compound
KW - Synthesis
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U2 - 10.1016/j.jssc.2003.08.024
DO - 10.1016/j.jssc.2003.08.024
M3 - Article
AN - SCOPUS:1642381279
SN - 0022-4596
VL - 177
SP - 709
EP - 713
JO - Journal of Solid State Chemistry
JF - Journal of Solid State Chemistry
IS - 3
ER -