Ordering phenomena in the new cerium compound Ce2Rh2Ga

DOI

Cerium and ytterbium are two members of the lanthanide (rare earth) series of elements that haverevealed in their intermetallic compounds new physics and many interesting properties. The newcerium compound Ce2Rh2Ga has been found to form in one of two polymorphs, depending on thetemperature of formation. Here we wish to investigate peculiar ordering phenomena in the hightemperaturevariant, which forms in an orthorhombic crystal structure. Our exploratory physicalproperty studies discovered two unusual features: one is a sharp and very prominent anomaly atTH=127 K, and the second is a more subtle feature at low temperatures, called TL=1.5 K. Ourelectron transport studies show the likelihood of a metal-to-insulator transition accompanied by acrystal structure transformation at TH, whereas the origin of the lower transition is more obscurebut probably of magnetic origin.

Identifier
DOI https://doi.org/10.5286/ISIS.E.96929463
Metadata Access https://icatisis.esc.rl.ac.uk/oaipmh/request?verb=GetRecord&metadataPrefix=oai_datacite&identifier=oai:icatisis.esc.rl.ac.uk:inv/96929463
Provenance
Creator Dr Devashi Adroja; Ms Sindisiwe Xhakaza; Dr Dmitry Khalyavin; Professor Andre Strydom
Publisher ISIS Neutron and Muon Source
Publication Year 2021
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 Natural Sciences; Physics
Temporal Coverage Begin 2018-09-27T07:00:00Z
Temporal Coverage End 2018-09-28T08:21:47Z