The Effect of Pressure on the Low Temperature Magnetic Structure of the CMR Material NdMnAsO0.95F0.05

DOI

Colossal magnetoresistance (CMR) is observed in the oxypnictide NdMnAsO1-xFx (x = 0 - 0.085) at low temperature. The CMR in NdMnAsO1-xFx arises due to competition between a strongly correlated antiferromagnetic insulating phase and a paramagnetic semiconductor with field. Another way to induce transitions between competing phases is to apply external pressure. Preliminary variable pressure data show a notable change in the temperature variation of the resistivity of NdMnAsO0.95F0.05 upon applying a pressure of up to 2.56 GPa. Given that the electronic and magnetic properties of NdMnAsO0.95F0.05 are strongly coupled it is highly likely that this change in resistivity is a result of a change in magnetic structure upon applying pressure. We aim to investigate the magnetic structure of NdMnAsO0.95F0.05 at temperatures between 20 K and 60 K in pressures up to 6 GPa.

Identifier
DOI https://doi.org/10.5286/ISIS.E.73945542
Metadata Access https://icatisis.esc.rl.ac.uk/oaipmh/request?verb=GetRecord&metadataPrefix=oai_datacite&identifier=oai:icatisis.esc.rl.ac.uk:inv/73945542
Provenance
Creator Dr Eve Wildman; Dr Abbie McLaughlin; Dr Pascal Manuel
Publisher ISIS Neutron and Muon Source
Publication Year 2019
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 Chemistry; Natural Sciences
Temporal Coverage Begin 2016-03-11T09:00:00Z
Temporal Coverage End 2016-03-14T09:00:00Z