Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/11156
Title: Simulation of characteristics of phase transitions in ferroelectric thin films
Authors: Zheng, Y
Wang, B
Woo, CH 
Keywords: Critical thickness
Curie temperature
Ferroelectric thin films
Issue Date: 2007
Publisher: Elsevier Science Bv
Source: Physics letters, section a : general, atomic and solid state physics, 2007, v. 368, no. 1-2, p. 117-124 How to cite?
Journal: Physics Letters, Section A: General, Atomic and Solid State Physics 
Abstract: Characteristics of phase transition in ferroelectric thin films are studied using the time dependent Ginzburg-Landau equation. Properties such as the spontaneous polarization, Curie temperature, critical thickness and susceptibility are investigated as a function of the extrapolation length, film size and the misfit strain. For free-standing PbTiO 3 thin film, the supercooling and superheating temperatures can be separately determined from the spontaneous polarization changes, under temperature heating-up and cooling-down conditions, respectively. When the film grown on compressive substrate, clamped effect on film may cause film made of first-order ferroelectric material to undergo a second-order transition. In addition, we have also comprehensively analyzed the effects of film size, the extrapolation length and substrate on characteristics of phase transitions. For free standing PbTiO 3 film, the different of superheating and supercooling temperature is insensitive to the film thickness and extrapolation length. The decrease of extrapolation length would not decrease the Curie temperature, but also decrease the critical thickness of the ferroelectricity. When film is thinner, the effect of the extrapolation length is larger on the change of the Curie temperature.
URI: http://hdl.handle.net/10397/11156
DOI: 10.1016/j.physleta.2007.03.064
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

8
Last Week
1
Last month
0
Citations as of Nov 6, 2017

WEB OF SCIENCETM
Citations

7
Last Week
0
Last month
0
Citations as of Nov 16, 2017

Page view(s)

39
Last Week
1
Last month
Checked on Nov 20, 2017

Google ScholarTM

Check

Altmetric



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