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Title: The microstructure and ferroelectricity of BiScO3–PbTiO3 nanoceramics at morphotropic phase boundaries

Dense (1 - x)BiScO3–xPbTiO3 nanoceramics with morphotropic phase boundaries and an average grain size of 11 nm were prepared. Synchrotron X-ray diffraction studies revealed that tetragonal and monoclinic phases coexist, and the grain boundary regions could be modeled as a paraelectric cubic phase. The grain boundary regions possessed complicated stress and electric fields. The polarization switching became more difficult under electric field due to the restriction and screening effect of grain boundary regions. The nanoceramics retained ferroelectricity with d33* = 292.9 ± 29.8 pm V-1 and d33 = 19.8 pC N-1.
Authors:
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Publication Date:
OSTI Identifier:
1131359
Resource Type:
Journal Article
Resource Relation:
Journal Name: Scripta Materialia; Journal Volume: 82; Journal Issue: C
Publisher:
Elsevier
Research Org:
Advanced Photon Source (APS), Argonne National Laboratory (ANL), Argonne, IL (US)
Sponsoring Org:
FOREIGNNSFDOE - BASIC ENERGY SCIENCESDOE-NNSA
Country of Publication:
United States
Language:
ENGLISH