Please use this identifier to cite or link to this item: http://lib.jncasr.ac.in:8080/jspui/handle/10572/2510
Title: Flux Growth of Yb6.6Ir6Sn16 Having Mixed-Valent Ytterbium
Authors: Peter, Sebastian C.
Subbarao, Udumula
Rayaprol, Sudhindra
Martin, Joshua B.
Balasubramanian, Mahalingarn
Malliakas, Christos D.
Kanatzidis, Mercouri G.
Keywords: Inorganic & Nuclear Chemistry
X-Ray Absorption
Crystal-Structure
Electrical-Resistivity
Physical-Properties
Ternary Stannides
High-Pressure
Rare-Earth
Yb
Intermetallics
Systems
Issue Date: 2014
Publisher: American Chemical Society
Citation: Peter, SC; Subbarao, U; Rayaprol, S; Martin, JB; Balasubramanian, M; Malliakas, CD; Kanatzidis, MG, Flux Growth of Yb6.6Ir6Sn16 Having Mixed-Valent Ytterbium. Inorganic Chemistry 2014, 53 (13) 6615-6623, http://dx.doi.org/10.1021/ic500204t
Inorganic Chemistry
53
13
Abstract: The compound Yb6.6Ir6Sn16 was obtained as single crystals in high yield from the reaction of Yb with Ir and Sn run in excess indium. Single-crystal X-ray diffraction analysis shows that Yb6.6Ir6Sn16 crystallizes in the tetragonal space group P42/nmc with a = b = 9.7105(7) angstrom and c = 13.7183(11) angstrom. The crystal structure is composed of a [Ir6Sn16] polyanionic network with cages in which the Yb atoms are embedded. The Yb sublattice features extensive vacancies on one crystallographic site. Magnetic susceptibility measurements on single crystals indicate Curie-Weiss law behavior <100 K with no magnetic ordering down to 2 K. The magnetic moment within the linear region (<100 K) is 3.21 mu(B)/Yb, which is similar to 70% of the expected value for a free Yb3+ ion suggesting the presence of mixed-valent ytterbium atoms. X-ray absorption near edge spectroscopy confirms that Yb6.6Ir6Sn16 exhibits mixed valence. Resistivity and heat capacity measurements for Yb6.6Ir6Sn16 indicate non-Fermi liquid metallic behavior.
Description: Restricted Access
URI: http://hdl.handle.net/10572/2510
ISSN: 0020-1669
Appears in Collections:Research Papers (Sebastian C. Peter)

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