Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/18920
Title: Structure and properties of lead zirconate titanate thin films by pulsed laser deposition
Authors: GOH WEI CHUAN
Keywords: lead zirconate titanate (PZT), pulsed laser deposition (PLD), thin film, crystal structure, epitaxial, ferroelectric, piezoelectric.
Issue Date: 18-Jan-2006
Source: GOH WEI CHUAN (2006-01-18). Structure and properties of lead zirconate titanate thin films by pulsed laser deposition. ScholarBank@NUS Repository.
Abstract: Lead zirconate titanate (PZT) thin films with different microstructure were prepared and the relationships between the microstructure and physical properties were investigated. Epitaxial growth process of the PZT films on SrTiO3 (STO) substrates by pulsed laser deposition (PLD) method was also studied, in which a two-layer structure at early growth stage was discovered, and column growth mode was observed with increased film thickness. With our developed LSMO/YBCO/YSZ intermediate layers, another pseudo epitaxial PZT film was achieved on silicon substrate. The pseudo epitaxial PZT film was characterized with granular and porous morphology, but exhibited significantly enhanced ferroelectric polarization. Our results have shown that improving the epitaxial quality without considering the tensile stress effects may not be sufficient for achieving the optimal ferroelectric properties for a ferroelectric film on silicon substrate. Although PZT films with dense microstructure would lead to a significantly higher dielectric constant and remnant polarization, but a less dense film could have a substantially higher piezoelectric voltage constant due to its low dielectric constant. These understandings on the relationship between the microstructure and properties are essential to tailor the microstructure and thus the performance of the PZT films aiming at different applications.
URI: http://scholarbank.nus.edu.sg/handle/10635/18920
Appears in Collections:Ph.D Theses (Open)

Show full item record
Files in This Item:
File Description SizeFormatAccess SettingsVersion 
Thesis Main Document.pdf4.51 MBAdobe PDF

OPEN

NoneView/Download

Page view(s)

283
checked on Dec 11, 2017

Download(s)

277
checked on Dec 11, 2017

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.