Why lanthanum-substituted bismuth titanate becomes fatigue free in a ferroelectric capacitor with platinum electrodes

Authors
Ding, Y Liu, JS Qin, HX Zhu, JS Wang, YN
Citation
Y. Ding et al., Why lanthanum-substituted bismuth titanate becomes fatigue free in a ferroelectric capacitor with platinum electrodes, APPL PHYS L, 78(26), 2001, pp. 4175-4177
Citations number
15
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
APPLIED PHYSICS LETTERS
ISSN journal
00036951 → ACNP
Volume
78
Issue
26
Year of publication
2001
Pages
4175 - 4177
Database
ISI
SICI code
0003-6951(20010625)78:26<4175:WLBTBF>2.0.ZU;2-4
Abstract
Bi4Ti3O12, (BTO) a Bi-layered perovskite oxide, shows fatigue after repeate d ferroelectric polarization reversals. On the other hand, Bi3.25La0.75Ti3O 12 (BLT) is fatigue free. From an extensive transmission electron microscop y study, it was found that there is a high density of antiphase boundaries (APBs) in BLT like in the fatigue-free SrBi2Ta2O9 but not in BTO. It is pro posed that the existence of APBs possibly plays a key role in the fatigue-f ree behavior of Bi-layered perovskite oxides. (C) 2001 American Institute o f Physics.