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Crystallographic study of ternary ordered skutterudite IrGe1.5Se1.5

Published online by Cambridge University Press:  29 February 2012

F. Laufek  and
J. Návrátil
F. Laufek*
Affiliation:
Czech Geological Survey, Geologická 6, 152 00 Praha 5, Czech Republic
J. Návrátil
Affiliation:
Joint Laboratory of Solid State Chemistry of IMC AS ČR, Studentská 84, 532 10 Pardubice, Czech Republic and University of Pardubice, Studentská 84, 532 10 Pardubice, Czech Republic
*
a)Author to whom correspondence should be addressed. Electronic mail: frantisek.laufek@geology.cz
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Abstract

The crystal structure of skutterudite-related phase IrGe1.5Se1.5 has been refined by the Rietveld method from laboratory X-ray powder diffraction data. Refined crystallographic data for IrGe1.5Se1.5 are a=12.0890(2) Å, c=14.8796(3) Å, V=1883.23(6) Å3, space group R3 (No. 148), Z=24, and Dc=8.87 g/cm3. Its crystal structure can be derived from the ideal skutterudite structure (CoAs3), where Se and Ge atoms are ordered in layers perpendicular to the [111] direction of the original skutterudite cell. Weak distortions of the anion and cation sublattices were also observed.

Keywords

IrGe1.5Se1.5X-ray powder diffraction dataRietveld refinementskutterudite
Type
Technical Articles
Information
Powder Diffraction , Volume 25 , Issue 3 , September 2010 , pp. 247 - 252
Copyright
Copyright © Cambridge University Press 2010

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