Tracking how the spin cycloid in BFO evolves with electric field and temperature

DOI

AFM order in BFO was first detected by neutron diffraction and was classified as Type G. However, the spins are not perfectly antiparallel; there is a spatial-modulated spin cycloidal structure with an incommensurate period of 64nm. This proposal aims to answer the following questions:1. How does the cycloid wavelength evolve with temperature field?2. Is there a reorientation of the cycloid direction when the electric field is applied? 3. Is the degeneracy between the different crystallographic orientations of the cycloid vector lifted? 4. Does the tuning of the spin order offer a way to achieve strong magnetoelectric coupling?Answers will be found by performing a GiSANS experiment on a [111] oriented BFO, to measure how the cycloid length scale changes under and applied electric field and temperature.

Identifier
DOI https://doi.org/10.5286/ISIS.E.54814783
Metadata Access https://icatisis.esc.rl.ac.uk/oaipmh/request?verb=GetRecord&metadataPrefix=oai_datacite&identifier=oai:icatisis.esc.rl.ac.uk:inv/54814783
Provenance
Creator Mr Carlos Aristizabal; Professor Ted Forgan; Dr Houssny Bouyanfif; Professor Alan Drew; Dr Donna Arnold; Dr Anthony Phillips; Professor Sean Langridge; Miss Shuo Han; Dr Sarah Rogers
Publisher ISIS Neutron and Muon Source
Publication Year 2018
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 2015-04-21T08:00:00Z
Temporal Coverage End 2015-04-23T08:00:00Z