Towards an accurate structural phase diagram for the novel BiScO3-PbTiO3 ferroelectric solid-solution

DOI

The aim of this experiment is to determine accurately the crystal structures of phases in the (1-x)BiScO3-xPbTiO3 (BST-PT) perovskite phase diagram, particularly in the vicinity of the reported morphotropic phase boundary (MPB) between rhombohedral and tetragonal symmetries at x=0.64, where preliminary x-ray powder diffraction shows that we have found a new phase of orthorhombic (or lower) symmetry at ambient temperature.. In so-doing, we aim to improve the understanding of how structural changes at the morphotropic phase boundary occur in a diverse range of systems. We propose to use GEM for this study as the high neutron flux will allow rapid acquisition of data for a large number of compositions and several temperatures. This will yield excellent structural information about this new system and aid in resolving the current controversies about the nature of the MPB.

Identifier
DOI https://doi.org/10.5286/ISIS.E.24003134
Metadata Access https://icatisis.esc.rl.ac.uk/oaipmh/request?verb=GetRecord&metadataPrefix=oai_datacite&identifier=oai:icatisis.esc.rl.ac.uk:inv/24003134
Provenance
Creator Professor Pam Thomas; Dr Kaustuv Datta
Publisher ISIS Neutron and Muon Source
Publication Year 2010
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 2007-10-15T09:06:06Z
Temporal Coverage End 2007-10-18T08:57:43Z