Ferroelectric precursor behavior of highly cation-ordered PbSc0.5Ta0.5O3 detected by acoustic emission: Tweed and polar nanoregions
Author(s)
Dul'kin, E
Salje, EKH
Aktas, O
Whatmore, RW
Roth, M
Type
Journal Article
Abstract
Highly ordered ferroelectric PbSc0.5Ta0.5O3 crystals were studied by acoustic emission over a wide
temperature range. Acoustic emission was found at three characteristic temperatures: 330, 409, and
600 K, which are close to those, known from the same disordered crystals, containing polar
nanoregions. The microstructure in our crystals contains structural “tweed” rather than
nanoregions. The coincidence of acoustic emission temperatures points towards a close structural
relationship between nanoregions and “tweed.” Under electric field, these temperatures shift
similar to “critical end point” behavior. The obtained data prove that acoustic emission detects
signals in a wider parameter space than previously expected.
temperature range. Acoustic emission was found at three characteristic temperatures: 330, 409, and
600 K, which are close to those, known from the same disordered crystals, containing polar
nanoregions. The microstructure in our crystals contains structural “tweed” rather than
nanoregions. The coincidence of acoustic emission temperatures points towards a close structural
relationship between nanoregions and “tweed.” Under electric field, these temperatures shift
similar to “critical end point” behavior. The obtained data prove that acoustic emission detects
signals in a wider parameter space than previously expected.
Date Issued
2014-11-24
Date Acceptance
2014-11-13
Citation
Applied Physics Letters, 2014, 105 (21)
ISSN
1077-3118
Publisher
AIP Publishing
Journal / Book Title
Applied Physics Letters
Volume
105
Issue
21
Copyright Statement
© 2014 AIP Publishing LLC.
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000345639400030&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Subjects
Science & Technology
Physical Sciences
Physics, Applied
Physics
RELAXOR FERROELECTRICS
ELECTRIC-FIELD
CHARACTERISTIC TEMPERATURES
DIELECTRIC RESPONSE
PHASE-TRANSITIONS
PB(SC1/2TA1/2)O3
MICROSTRUCTURE
POLARIZATION
PEROVSKITE
CRYSTALS
Applied Physics
09 Engineering
02 Physical Sciences
Publication Status
Published
Article Number
ARTN 212901