Magnetic phase diagram of multiferroic GdMn2O5

DOI

In the last five years, we have carried out a comprehensive study of the family of REMn2O5 multiferroics by neutron and X-ray magnetic scattering, providing details about the microscopic origin of ferroelectricity in this family of compounds. We have established that ferroelectricity emerges as a result of symmetric magnetic exchange interaction, unlike for other class of multiferroic. In a recent magnetic X-ray experiment on GdMn2O5, until then an unstudied member of the series, we have found that the magnetic ferroelectric phase is commensurate with a wave-vector k=(1/2,0,0) from 26K down to the lowest temperature. This is unique as other members display a magnetic ordering with k inside the BZ. Crucially, the electrical polarization is 50% higher than for the analogues. The goal of the experiment is to probe the magnetic states above 26K, that we failed to identify with X-ray.

Identifier
DOI https://doi.org/10.5286/ISIS.E.24090098
Metadata Access https://icatisis.esc.rl.ac.uk/oaipmh/request?verb=GetRecord&metadataPrefix=oai_datacite&identifier=oai:icatisis.esc.rl.ac.uk:inv/24090098
Provenance
Creator Dr Laurent Chapon; Dr Carlo Vecchini; Professor Paolo Radaelli; Dr Roger Johnson; Dr Alessandro Bombardi; Dr Sang-Wook Cheong
Publisher ISIS Neutron and Muon Source
Publication Year 2016
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 2013-03-02T07:24:22Z
Temporal Coverage End 2013-03-04T12:33:29Z