Dielectric nonlinearity of Pb(Yb1/2Nb1/2)O3-PbTiO3 thin films with {100} and {111} crystallographic orientation -: art. no. 064106

被引:67
作者
Gharb, NB [1 ]
Trolier-McKinstry, S
机构
[1] Penn State Univ, Mat Res Inst, University Pk, PA 16802 USA
[2] Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USA
基金
美国国家科学基金会;
关键词
D O I
10.1063/1.1857054
中图分类号
O59 [应用物理学];
学科分类号
摘要
The extrinsic contributions to the dielectric response of 0.5Pb(Yb1/2Nb1/2)O-3-0.5PbTiO(3) thin films with (100) or (111) crystallographic orientation were studied (all indices are given in terms of the pseudocubic cell). Both the nonlinearity in the permittivity as well as the polarization hysteresis are described by the Rayleigh Law in subswitching conditions. It was found that (100) oriented films show a slightly higher extrinsic contribution to their dielectric behavior than (111) oriented films. For example, at 1 kHz and oscillation fields of 20 kV/cm, for (100) and (111) oriented films, respectively, 25% and 21% of the relative dielectric constant is due to irreversible extrinsic contributions. The difference is attributed to the higher concentration of mobile interfaces in the (100) oriented thin films. For frequencies between 20 Hz and 200 kHz both the Rayleigh parameters dropped with frequency approximately logarithmically. The frequency dependent Rayleigh parameters have been used to modify the Rayleigh Law to allow prediction of the dielectric properties in terms of both oscillation field and frequency. (C) 2005 American Institute of Physics.
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页数:7
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共 42 条
[1]  
[Anonymous], COHIERS PHYS
[2]   FORCE-CONSTANT AND EFFECTIVE MASS OF 90-DEGREES DOMAIN-WALLS IN FERROELECTRIC CERAMICS [J].
ARLT, G ;
PERTSEV, NA .
JOURNAL OF APPLIED PHYSICS, 1991, 70 (04) :2283-2289
[3]   TWINNING IN FERROELECTRIC AND FERROELASTIC CERAMICS - STRESS RELIEF [J].
ARLT, G .
JOURNAL OF MATERIALS SCIENCE, 1990, 25 (06) :2655-2666
[4]   Nanoscale domains and local piezoelectric hysteresis in Pb(Zn1/3Nb2/3)O3-4.5%PbTIO3 single crystals [J].
Bdikin, IK ;
Shvartsman, VV ;
Kholkin, AL .
APPLIED PHYSICS LETTERS, 2003, 83 (20) :4232-4234
[5]  
BHARADWAJA SSN, COMMUNICATION
[6]   STATISTICAL-THEORY OF HYSTERESIS IN FERROELECTRIC MATERIALS [J].
BOSER, O .
JOURNAL OF APPLIED PHYSICS, 1987, 62 (04) :1344-1348
[7]   Grain size and domain size relations in bulk ceramic ferroelectric materials [J].
Cao, WW ;
Randall, CA .
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1996, 57 (10) :1499-1505
[8]   Contributions to the nonlinear dielectric and piezoelectric response of ferroelectric thin films and ceramics [J].
Damjanovic, D ;
Taylor, DV .
FERROELECTRICS, 1999, 221 (1-4) :137-146
[9]   Contribution of the irreversible displacement of domain walls to the piezoelectric effect in barium titanate and lead zirconate titanate ceramics [J].
Damjanovic, D ;
Demartin, M .
JOURNAL OF PHYSICS-CONDENSED MATTER, 1997, 9 (23) :4943-4953
[10]   Logarithmic frequency dependence of the piezoelectric effect due to pinning of ferroelectric-ferroelastic domain walls [J].
Damjanovic, D .
PHYSICAL REVIEW B, 1997, 55 (02) :R649-R652