Competitive interactions between the surface effect and the depolarization field effect on the critical size of ferroelectric perovskite ultrathin films

Gang Liu; Rui Hong Wang; Jun Sun

doi:10.1016/j.scriptamat.2006.11.009

Competitive interactions between the surface effect and the depolarization field effect on the critical size of ferroelectric perovskite ultrathin films

Gang Liu
, Rui Hong Wang
, Jun Sun

School of Materials Science and Engineering

Xi'an Jiaotong University

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

A competitive interaction exists between the surface effect and the depolarization field effect on the size effect of ferroelectric films, and there exists a crucial film thickness (h_s), where the dominant influencing effect changes from the depolarization field effect at larger thickness to the surface effect at smaller thickness. We estimate h_s to be ∼20-40 nm, varying with the residual strain, for PbTiO₃ films by using a generalized Landau-Ginzburg-Devonshire thermodynamic theory. The calculations are in good agreement with measurements.

Original language	English
Pages (from-to)	337-340
Number of pages	4
Journal	Scripta Materialia
Volume	56
Issue number	5
DOIs	https://doi.org/10.1016/j.scriptamat.2006.11.009
State	Published - Mar 2007

Keywords

Crucial film thickness
Depolarization field effect
Ferroelectric film
Surface effect

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10.1016/j.scriptamat.2006.11.009

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title = "Competitive interactions between the surface effect and the depolarization field effect on the critical size of ferroelectric perovskite ultrathin films",

abstract = "A competitive interaction exists between the surface effect and the depolarization field effect on the size effect of ferroelectric films, and there exists a crucial film thickness (hs), where the dominant influencing effect changes from the depolarization field effect at larger thickness to the surface effect at smaller thickness. We estimate hs to be ∼20-40 nm, varying with the residual strain, for PbTiO3 films by using a generalized Landau-Ginzburg-Devonshire thermodynamic theory. The calculations are in good agreement with measurements.",

keywords = "Crucial film thickness, Depolarization field effect, Ferroelectric film, Surface effect",

author = "Gang Liu and Wang, \{Rui Hong\} and Jun Sun",

year = "2007",

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language = "英语",

volume = "56",

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T1 - Competitive interactions between the surface effect and the depolarization field effect on the critical size of ferroelectric perovskite ultrathin films

AU - Liu, Gang

AU - Wang, Rui Hong

AU - Sun, Jun

PY - 2007/3

Y1 - 2007/3

N2 - A competitive interaction exists between the surface effect and the depolarization field effect on the size effect of ferroelectric films, and there exists a crucial film thickness (hs), where the dominant influencing effect changes from the depolarization field effect at larger thickness to the surface effect at smaller thickness. We estimate hs to be ∼20-40 nm, varying with the residual strain, for PbTiO3 films by using a generalized Landau-Ginzburg-Devonshire thermodynamic theory. The calculations are in good agreement with measurements.

AB - A competitive interaction exists between the surface effect and the depolarization field effect on the size effect of ferroelectric films, and there exists a crucial film thickness (hs), where the dominant influencing effect changes from the depolarization field effect at larger thickness to the surface effect at smaller thickness. We estimate hs to be ∼20-40 nm, varying with the residual strain, for PbTiO3 films by using a generalized Landau-Ginzburg-Devonshire thermodynamic theory. The calculations are in good agreement with measurements.

KW - Crucial film thickness

KW - Depolarization field effect

KW - Ferroelectric film

KW - Surface effect

UR - https://www.scopus.com/pages/publications/33845674016

U2 - 10.1016/j.scriptamat.2006.11.009

DO - 10.1016/j.scriptamat.2006.11.009

M3 - 文章

AN - SCOPUS:33845674016

SN - 1359-6462

VL - 56

SP - 337

EP - 340

JO - Scripta Materialia

JF - Scripta Materialia

IS - 5

ER -

Competitive interactions between the surface effect and the depolarization field effect on the critical size of ferroelectric perovskite ultrathin films

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Keywords

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