Flux growth of Yb6.6Ir6Sn16 having mixed-valent ytterbium

Sebastian C. Peter; Udumula Subbarao; Sudhindra Rayaprol; Joshua B. Martin; Mahalingam Balasubramanian; Christos D. Malliakas; Mercouri G. Kanatzidis

doi:10.1021/ic500204t

Flux growth of Yb_6.6Ir₆Sn₁₆ having mixed-valent ytterbium

Sebastian C. Peter^*, Udumula Subbarao, Sudhindra Rayaprol, Joshua B. Martin, Mahalingam Balasubramanian, Christos D. Malliakas, Mercouri G. Kanatzidis

^*Corresponding author for this work

Chemistry

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

10 Scopus citations

Abstract

The compound Yb_6.6Ir₆Sn₁₆ 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 Yb _6.6Ir₆Sn₁₆ crystallizes in the tetragonal space group P4₂/nmc with a = b = 9.7105(7) Å and c = 13.7183(11) Å. 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 μ_B/Yb, which is ∼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 Yb_6.6Ir₆Sn₁₆ exhibits mixed valence. Resistivity and heat capacity measurements for Yb_6.6Ir ₆Sn₁₆ indicate non-Fermi liquid metallic behavior.

Original language	English (US)
Pages (from-to)	6615-6623
Number of pages	9
Journal	Inorganic chemistry
Volume	53
Issue number	13
DOIs	https://doi.org/10.1021/ic500204t
State	Published - Jul 7 2014

ASJC Scopus subject areas

Inorganic Chemistry
Physical and Theoretical Chemistry

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@article{305e268ce17a42c7a7bf24a4748f5477,

title = "Flux growth of Yb6.6Ir6Sn16 having mixed-valent ytterbium",

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 Yb 6.6Ir6Sn16 crystallizes in the tetragonal space group P42/nmc with a = b = 9.7105(7) {\AA} and c = 13.7183(11) {\AA}. 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 μB/Yb, which is ∼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 Yb6.6Ir 6Sn16 indicate non-Fermi liquid metallic behavior.",

author = "Peter, {Sebastian C.} and Udumula Subbarao and Sudhindra Rayaprol and Martin, {Joshua B.} and Mahalingam Balasubramanian and Malliakas, {Christos D.} and Kanatzidis, {Mercouri G.}",

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language = "English (US)",

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AU - Peter, Sebastian C.

AU - Subbarao, Udumula

AU - Rayaprol, Sudhindra

AU - Martin, Joshua B.

AU - Balasubramanian, Mahalingam

AU - Malliakas, Christos D.

AU - Kanatzidis, Mercouri G.

PY - 2014/7/7

Y1 - 2014/7/7

N2 - 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 Yb 6.6Ir6Sn16 crystallizes in the tetragonal space group P42/nmc with a = b = 9.7105(7) Å and c = 13.7183(11) Å. 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 μB/Yb, which is ∼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 Yb6.6Ir 6Sn16 indicate non-Fermi liquid metallic behavior.

AB - 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 Yb 6.6Ir6Sn16 crystallizes in the tetragonal space group P42/nmc with a = b = 9.7105(7) Å and c = 13.7183(11) Å. 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 μB/Yb, which is ∼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 Yb6.6Ir 6Sn16 indicate non-Fermi liquid metallic behavior.

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Flux growth of Yb_6.6Ir₆Sn₁₆ having mixed-valent ytterbium

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