Temperature-electric field hysteresis loop of multicaloric effects in PbZr0.8Ti0.2O3 thin films

2019 ◽  
Vol 383 (24) ◽  
pp. 2933-2937 ◽  
Author(s):  
F. Wang ◽  
T. Liu ◽  
C.L. Xie ◽  
Y. Liu ◽  
N.S. Ma ◽  
...  
Keyword(s):  
Thin Films ◽  
Electric Field ◽  
Hysteresis Loop

Shape of piezoelectric hysteresis loop for non-ferroelastic switching

2003 ◽  
Vol 784 ◽  
Author(s):  
A. K. Tagantsev ◽  
P. Muralt ◽  
J. Fousek
Keyword(s):  
Thin Films ◽  
Electric Field ◽  
Hysteresis Loop ◽  
Single Crystals ◽  
Applied Electric Field ◽  
Piezoelectric Coefficient ◽  
Hysteresis Loops ◽  
Simple Theory ◽  
The Difference

ABSTRACTA simple theory for the shape of the piezoelectric hysteresis loops (piezoelectric coefficient d vs. applied electric field E) is developed for the case of non-ferroelelastic 180° switching in ferroelectrics. The theory provides explanations for specific features of piezoelectric hysteresis loops, which have been observed in single crystals, thin films and in ceramics in particular. The piezoelectric coefficient may show a “hump”, i.e. when E decreases from the tip of the loop down to zero, d passes through a maximum, and a “nose”, i.e. a self-crossing of the loop close to its tips. The theory also explains the difference in the coercive fields seen in the polarization and piezoelectric loops.

Imprint in Ferroelectric Thin Films Caused by Screening of an Electric Field in a Thin Surface Layer

2001 ◽  
Vol 688 ◽  
Author(s):  
Michael Grossmann ◽  
Oliver Lohse ◽  
Dierk Bolten ◽  
Ulrich Boettger ◽  
Rainer Waser
Keyword(s):  
Thin Films ◽  
Surface Layer ◽  
Electric Field ◽  
Hysteresis Loop ◽  
Quantitative Description ◽  
Aging Effect ◽  
Ferroelectric Thin Films ◽  
Thin Surface Layer ◽  
Simulation Based ◽  
Experimental Parameters

AbstractImprint describes an aging effect in ferroelectric thin films which manifests itself by a shift of the P-V hysteresis loop on the voltage axis. In this paper a mechanism is described which attributes imprint to the screening of a large electric field within a thin surface layer by electronic charges. The field at the surface arises due to the existence of a thin surface layer in which the spontaneous ferroelectric polarization is suppressed. In the course of aging this field is gradually screened by electronic charges which are generated by a Frenkel-Poole effect and then become trapped near the electrode-thin-film interface causing the shift of the hysteresis loop. A numerical simulation based on this model allows a quantitative description of the imprint effect as a function of various experimental parameters.

Influence of Electric Field on Microstructures of Pentacene Thin-Films in Field-Effect Transistors

2008 ◽  
Vol 18 (2) ◽  
pp. 285-293 ◽  
Author(s):  
H. L. Cheng ◽  
W. Y. Chou ◽  
C. W. Kuo ◽  
Y. W. Wang ◽  
Y. S. Mai ◽  
...  
Keyword(s):  
Thin Films ◽  
Electric Field ◽  
Field Effect ◽  
Field Effect Transistors

Phase transitions of antiferroelectric lead zirconate thin films in high electric field

1996 ◽  
Vol 20 (5-6) ◽  
pp. 149-155 ◽  
Author(s):  
K. Yamakawa ◽  
K. W. A. Gachigi ◽  
S. Trolier-McKinstry ◽  
J. P. Dougherty
Keyword(s):  
Thin Films ◽  
Phase Transitions ◽  
Electric Field ◽  
Lead Zirconate ◽  
High Electric Field

Electric-field-induced lattice distortion in epitaxial BiFeO3 thin films as determined by in situ time-resolved x-ray diffraction

2017 ◽  
Vol 111 (8) ◽  
pp. 082907 ◽  
Author(s):  
Seiji Nakashima ◽  
Osami Sakata ◽  
Hiroshi Funakubo ◽  
Takao Shimizu ◽  
Daichi Ichinose ◽  
...  
Keyword(s):  
Thin Films ◽  
Electric Field ◽  
Lattice Distortion ◽  
X Ray Diffraction ◽  
Time Resolved ◽  
X Ray ◽  
Bifeo3 Thin Films

A polycrystal hysteresis model for ferroelectric ceramics

2006 ◽  
Vol 462 (2069) ◽  
pp. 1573-1592 ◽  
Author(s):  
Y Su ◽  
G.J Weng
Keyword(s):  
Electric Field ◽  
Hysteresis Loop ◽  
Ferroelectric Properties ◽  
Electric Displacement ◽  
Hysteresis Loops ◽  
Ferroelectric Ceramics ◽  
Domain Growth ◽  
Thermodynamic Approach ◽  
Hysteresis Model ◽  
Self Consistent

Most key elements of ferroelectric properties are defined through the hysteresis loops. For a ferroelectric ceramic, its loop is contributed collectively by its constituent grains, each having its own hysteresis loop when the ceramic polycrystal is under a cyclic electric field. In this paper, we propose a polycrystal hysteresis model so that the hysteresis loop of a ceramic can be calculated from the loops of its constituent grains. In this model a micromechanics-based thermodynamic approach is developed to determine the hysteresis behaviour of the constituent grains, and a self-consistent scheme is introduced to translate these behaviours to the polycrystal level. This theory differs from the classical phenomenological ones in that it is a micromechanics-based thermodynamic approach and it can provide the evolution of new domain concentration among the constituent grains. It also differs from some recent micromechanics studies in its secant form of self-consistent formulation and in its application of irreversible thermodynamics to derive the kinetic equation of domain growth. To put this two-level micromechanics theory in perspective, it is applied to a ceramic PLZT 8/65/35, to calculate its hysteresis loop between the electric displacement and the electric field ( D versus E ), and the butterfly-shaped longitudinal strain versus the electric field relation ( ϵ versus E ). The calculated results are found to be in good quantitative agreement with the test data. The corresponding evolution of new domain concentration c 1 and the individual hysteresis loops of several selected grains—along with those of the overall polycrystal—are also illustrated.

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