To complete a pressure dependence study of topological frustration in Y(Mn0.95Al0.05)2 as probed by MuSR

DOI

While Y(Mn1-xAlx)2 (x<0.02) is seen as a system of AF coupled local Mn moments (T<110K), alloys with 0.02<x<0.3 show characteristics of a topologically frustrated spin glass-like material. High pressure neutron diffraction, however, suggests 4.5kB inhibits Tg leaving a paramagnetic ground state and a lattice parameter close to that of AF material (x<0.02). Unlike alloys with x<0.02, however, no AF transition is observed and weak magnetic reflections are suppressed. Recent LF-uSR (LF=110G) high pressure studies (ARGUS) have allowed the mechanisms driving frustration to be probed further on a local level. A pressure dependent change in the relaxation function, Gz(t), suggests external pressure suppresses the frustrated ground state. However, to confirm this we now aim to show that the observed changes in Gz(t) are wholly pressure dependent and not influenced by the application of LF=110G

Identifier
DOI https://doi.org/10.5286/ISIS.E.24070925
Metadata Access https://icatisis.esc.rl.ac.uk/oaipmh/request?verb=GetRecord&metadataPrefix=oai_datacite&identifier=oai:icatisis.esc.rl.ac.uk:inv/24070925
Provenance
Creator Mr Kevin Ellis; Dr Mark Telling
Publisher ISIS Neutron and Muon Source
Publication Year 2012
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 2009-08-05T09:24:51Z
Temporal Coverage End 2009-08-06T08:37:40Z