CUED Publications database

90° domain dynamics and relaxation in thin ferroelectric/ferroelastic films

Ivry, Y and Wang, N and Chu, D and Durkan, C (2010) 90° domain dynamics and relaxation in thin ferroelectric/ferroelastic films. Physical Review B - Condensed Matter and Materials Physics, 81. ISSN 1098-0121

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We investigated the dynamics and relaxation of 90° domains in 60-nm-thick lead-zirconium titanate (PbZr0.3 T0.7 O3) films, with enhanced piezoresponse force microscopy. We show that under opposite electric fie ld, ferroelectric domains are reversibly switched while ferroelastic domains reorganize in a nonreversible way. Moreover, we show that the relaxation-time constant of 90° domains is two orders of magnitude shorter than for the previously reported 180° domains relaxation. Furthermore, we demonstrate the influence of geometry and scale on the relaxation process. Finally, we propose a relaxation mechanism for ferroelastic-ferroelectric systems, with implications for devices based on these materials. © 2010 The American Physical Society.

Item Type: Article
Divisions: Div B > Photonics
Div B > Solid State Electronics and Nanoscale Science
Depositing User: Cron Job
Date Deposited: 17 Jul 2017 19:18
Last Modified: 18 Feb 2021 15:41
DOI: 10.1103/PhysRevB.81.174118