Magnetism of mass-selected FeRh B2 nanocrystals in epitaxy on perovskite oxide

DOI

Near equiatomic composition, FeRh bulk alloys exhibit a CsCl-type (B2) chemically ordered phase related to a metamagnetic transition from an antiferromagnetic (AFM) to a ferromagnetic (FM) state close to ambient. Recently, we underlined the main role of Rh atoms on the metamagnetic transition for samples with high-density FeRh nanoparticles assemblies, where Rh kept a residual FM signature even at low temperature. The objective of this proposal is to study low-density samples, of mass-selected FeRh nanoparticles (NPs) grown on perovskite oxide, from X-ray absorption spectroscopy and magnetic circular dichroism (XAS/XMCD) experiments at Fe K and Rh L-edges at ID12 to explore interfacial strain effects on the magnetic order of epitaxial FeRh nanoparticles. Both use of quarter-wave plate to enhance the circular polarization rate and SDD with appropriate energy filter mounted in the 8T-cryomagnet would improve the signal to noise ratio in such diluted hybrid-nanostructures.

Identifier
DOI https://doi.org/10.15151/ESRF-ES-1117382058
Metadata Access https://icatplus.esrf.fr/oaipmh/request?verb=GetRecord&metadataPrefix=oai_datacite&identifier=oai:icatplus.esrf.fr:inv/1117382058
Provenance
Creator Florent TOURNUS ORCID logo; Sara GONZALEZ ORCID logo; Fabrice WILHELM ORCID logo; Veronique DUPUIS ORCID logo; Joseph MOREAU; Matthieu BUGNET ORCID logo
Publisher ESRF (European Synchrotron Radiation Facility)
Publication Year 2026
Rights CC-BY-4.0; https://creativecommons.org/licenses/by/4.0
OpenAccess true
Representation
Resource Type Data from large facility measurement; Collection
Discipline Particles, Nuclei and Fields