Sc3Ir4Si13+x
and Sc4Ir7Ge6 – the perovskite-related crystal structures
Author:
Levytskyi Volodymyr1ORCID, Wagler Jörg2ORCID, Hennig Christoph3ORCID, Feig Manuel1, Weigel Tina1, Leithe-Jasper Andreas4ORCID, Meyer Dirk C.1, Gumeniuk Roman1ORCID
Affiliation:
1. Institute of Experimental Physics, TU Bergakademie Freiberg , Leipziger Straße 23 , 09599 Freiberg , Germany 2. Institute of Inorganic Chemistry, TU Bergakademie Freiberg , Leipziger Straße 29 , 09599 Freiberg , Germany 3. Helmholtz-Zentrum Dresden-Rossendorf, Institute of Resource Ecology, The Rossendorf Beamline (BM20) at European Synchrotron Radiation Facility , 71 Avenue des Martyrs , 38043 Grenoble , France 4. Max Planck Institute for Chemical Physics of Solids , Dresden , Germany
Abstract
Abstract
The crystal structure of Sc3Ir4Si13+x
(x = 0.22) [space group
P
m
3
‾
n
$Pm\bar{3}n$
, a = 8.4651(1) Å] is found to be a new disordered variant of the primitive cubic Yb3Rh4Sn13 Remeika prototype. The silicide is stable in the narrow temperature range of 1283–1397 °C and reveals metallic properties. The crystal structure of Sc4Ir7Ge6 [U4Re7Si6 type, space group
I
m
3
‾
m
$Im\bar{3}m$
, a = 8.1397(8) Å] is refined for the first time. The electronic band structure calculations reveal that the properties of this germanide can be explained based on the free electron gas model. Both compounds reveal close structural relationships to the simple perovskite structure.
Publisher
Walter de Gruyter GmbH
Subject
Inorganic Chemistry,Condensed Matter Physics,General Materials Science
Reference37 articles.
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