Importance of random fields on the properties and ferroelectric phase stability of < 001 > oriented 0.7 Pb(Mg1/3Nb2/3)O-3-0.3 PbTiO3 crystals

Authors
Viehland, D Powers, J Cross, LE Li, JF
Citation
D. Viehland et al., Importance of random fields on the properties and ferroelectric phase stability of < 001 > oriented 0.7 Pb(Mg1/3Nb2/3)O-3-0.3 PbTiO3 crystals, APPL PHYS L, 78(22), 2001, pp. 3508-3510
Citations number
15
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
APPLIED PHYSICS LETTERS
ISSN journal
00036951 → ACNP
Volume
78
Issue
22
Year of publication
2001
Pages
3508 - 3510
Database
ISI
SICI code
0003-6951(20010528)78:22<3508:IORFOT>2.0.ZU;2-3
Abstract
Temperature dependent dielectric constant measurements have been performed on < 001 > oriented 0.7 Pb(Mg1/3Nb2/3)O-3-0.3 PbTiO3 crystals. These invest igations have revealed an irreversible secondary transformation between a n ormal ferroelectric state and a relaxor ferroelectric state with increasing temperature. The results demonstrate that the anisotropy of the high perfo rmance piezocrystal state is only metastably locked in under application of field. Clearly, local random fields play a crucial role upon the ferroelec tric phase stability and properties of < 001 > oriented piezocrystals. (C) 2001 American Institute of Physics.