Journal ArticleDOI
Polarization rotation mechanism for ultrahigh electromechanical response in single-crystal piezoelectrics
Huaxiang Fu,Ronald E. Cohen +1 more
Reads0
Chats0
TLDR
It is shown that a large piezoelectric response can be driven by polarization rotation induced by an external electric field, and the computations suggest how to design materials with better performance, and may stimulate further interest in the fundamental theory of dielectric systems in finite electric fields.Abstract:
Piezoelectric materials, which convert mechanical to electrical energy (and vice versa), are crucial in medical imaging, telecommunication and ultrasonic devices. A new generation of single-crystal materials, such as Pb(Zn1/3Nb2/3)O3-PbTiO3 (PZN-PT) and Pb(Mg1/3Nb2/3)O3-PbTiO3 (PMN-PT), exhibit a piezoelectric effect that is ten times larger than conventional ceramics, and may revolutionize these applications. However, the mechanism underlying the ultrahigh performance of these new materials-and consequently the possibilities for further improvements-are not at present clear. Here we report a first-principles study of the ferroelectric perovskite, BaTiO3, which is similar to single-crystal PZN-PT but is a simpler system to analyse. We show that a large piezoelectric response can be driven by polarization rotation induced by an external electric field. Our computations suggest how to design materials with better performance, and may stimulate further interest in the fundamental theory of dielectric systems in finite electric fields.read more
Citations
More filters
Journal ArticleDOI
Triple-point-type morphotropic phase boundary based large piezoelectric Pb-free material—Ba(Ti0.8Hf0.2)O3-(Ba0.7Ca0.3)TiO3
TL;DR: In this article, a triple-point morphotropic phase boundary (TMPB) based Pb-free system with anomalous ac (dielectric and piezoelectric) and dc (P-E hysteresis) properties is presented.
Journal ArticleDOI
Perovskite stabilization and electromechanical properties of polycrystalline lead zinc niobate-lead zirconate titanate
Huiqing Fan,Hyoun-Ee Kim +1 more
TL;DR: In this paper, the perovskite structure of Pb(Zn1/3Nb2/3)O3 (PZN) ceramics was stabilized by adding a Ti-rich side tetragonal Pb (Zr0.47Ti0.53) O3 across the morphotropic phase boundary (MPB).
Journal ArticleDOI
Additive Manufacturing of Piezoelectric Materials
Cheng Chen,Wang Xi,Yan Wang,Dandan Yang,Fangyi Yao,Wenxiong Zhang,Bo Wang,Galhenage A. Sewvandi,Desuo Yang,Dengwei Hu +9 more
Journal ArticleDOI
Ferroelectric polymers exhibiting behaviour reminiscent of a morphotropic phase boundary
TL;DR: St stereochemically induced behaviour in ferroelectric poly(vinylidene fluoride-co-trifluoroethylene) (P(VDF-TrFE) copolymers is reported, which is similar to that observed at morphotropic phase boundaries in perovskites, and opens up the way for the development of scalable, high-performance piezoelectric polymers.
Journal ArticleDOI
Dielectric and piezoelectric performance of PMN–PT single crystals with compositions around the MPB: influence of composition, poling field and crystal orientation
TL;DR: In this paper, a detailed study of the dependence of the dielectric and piezoelectric performance on the composition, poling field and crystallographic direction for Pb(Mg 1/3 Nb 2/3 )O 3 PbTiO 3 (PMN-PT) single crystal plates with compositions around the rombohedral-tetragonal morphotropic phase boundary (MPB).
References
More filters
Book
Principles and Applications of Ferroelectrics and Related Materials
TL;DR: In this paper, the theory of ferroelectricity in terms of soft modes and lattice dynamics is developed and modern techniques of measurement, including X-ray, optic, and neutron scattering, infra-red absorption, and magnetic resonance.
Journal ArticleDOI
Ultrahigh strain and piezoelectric behavior in relaxor based ferroelectric single crystals
Seung Eek Park,Thomas R. Shrout +1 more
TL;DR: In this article, the piezoelectric properties of relaxor based ferroelectric single crystals, such as Pb(Zn1/3Nb2/3)O3 and PbTiO3, were investigated for electromechanical actuators.
Journal ArticleDOI
Theory of polarization of crystalline solids
TL;DR: It is shown that physically $\ensuremath{\Delta}P can be interpreted as a displacement of the center of charge of the Wannier functions.
Journal ArticleDOI
Origin of ferroelectricity in perovskite oxides
TL;DR: In this paper, the authors report results of electronic-structure calculations on two classic examples of ferroelectric perovskites, BaTiO3 and PbTiO2, and demonstrate that hybridization between the titanium 3d states and the oxygen 2p states is essential for ferroelectivity.
Journal ArticleDOI
Macroscopic polarization in crystalline dielectrics : the geometric phase approach
TL;DR: In this paper, King-Smith and Vanderbilt developed a complete theory in which the polarization difference between any two crystal states in a null electric field takes the form of a geometric quantum phase.
Related Papers (5)
Ultrahigh strain and piezoelectric behavior in relaxor based ferroelectric single crystals
Seung Eek Park,Thomas R. Shrout +1 more