Properties of multilayer composite thin films based on morphotropic phase boundary Pb(Mg1/3Nb2/3)O3-PbTiO3

被引：5
作者：
El Hosiny Ali, H. [1 ]
Jimenez, R. [1 ]
Ricote, J. [1 ]
Perez de la Cruz, J. [2 ]
Fernandes, J. R. A. [2 ,3 ]
Calzada, M. L. [1 ]
机构：
[1] ICMM CSIC, Madrid 28049, Spain
[2] INESC TEC INESC, Inst Engn Sistemas & Comp Porto, P-4200465 Oporto, Portugal
[3] Univ Tras Os Montes & Alto Douro, P-5001801 Vila Real, Portugal
来源：
THIN SOLID FILMS | 2012年 / 520卷 / 24期
关键词：
Thin film; Relaxor-ferroelectric; Ferroelectricity; Piezoelectricity; Pyroelectricity; Multilayers; Perovskite; Chemical solution deposition; FERROELECTRIC PROPERTIES; POLARIZATION; PYROELECTRICITY; ENHANCEMENT; DEPENDENCE; BEHAVIOR;
D O I：
10.1016/j.tsf.2012.07.118
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
It has been reported that ferroelectric and piezoelectric properties of Pb(Mg1/3Nb2/3)O-3-PbTiO3 (PMNT) thin films, with compositions close to the morphotropic phase boundary (MPB), show lower values than those reported for bulk ceramics with the same composition, which has been attributed to a reduction of the remnant polarization caused by the small size of the grains in the films. An alternative has been proposed to take full advantage of the excellent piezoelectric properties of polycrystalline PMNT in thin film form: a multilayer configuration that uses ferroelectric layers with large remnant polarization, in this case PbTiO3, to generate an internal electric bias within the PMNT layers and, thus, anchor an induced polarization on them, resulting in a consequent large piezoelectric behavior. The detailed study of the properties of these multilayer composite films reveals the complex correlations that arise in these heterostructures, which are key for the design of optimized piezoelectric films based on MPB PMNT. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：7205 / 7211
页数：7
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