Order-Disorder Transitions in Layered Tellurides

DOI

We have prepared a new series of layered tellurides Cr2-xInxGe2Te6, containing 2D ordered arrays of (Cr,In) cations and (Ge-Ge) pairs. Recent neutron measurements reveal indium susbtitution induces structural changes. The 3-layer structure of the parent (x=0) is retained at low levels of substitution, whilst in the region 0.4<x1.4) end of the series. We wish to investigate the relative stability of the three structural regions by collecting powder neutron diffraction data in the range 300<T/K<900. We wish to establish whether (i) the 3-layer structure transforms to a 2-layer variant with increasing temperature; (ii) the 3- and 2-layer structures convert to a CdI2 (1-layer) type structure at elevated temperatures; (iii) intra- and inter-layer disordering occurs at the highest temperatures

Identifier
DOI https://doi.org/10.5286/ISIS.E.24089587
Metadata Access https://icatisis.esc.rl.ac.uk/oaipmh/request?verb=GetRecord&metadataPrefix=oai_datacite&identifier=oai:icatisis.esc.rl.ac.uk:inv/24089587
Provenance
Creator Professor Anthony Powell; Dr Paz Vaqueiro-Rodriguez; Dr Andreas Kaltzoglou; Mr Jack Corps
Publisher ISIS Neutron and Muon Source
Publication Year 2015
Rights CC-BY Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Contact isisdata(at)stfc.ac.uk
Representation
Resource Type Dataset
Discipline Photon- and Neutron Geosciences
Temporal Coverage Begin 2012-10-04T08:42:55Z
Temporal Coverage End 2012-10-15T07:46:59Z