Journal ArticleDOI
Polarization rotation mechanism for ultrahigh electromechanical response in single-crystal piezoelectrics
Huaxiang Fu,Ronald E. Cohen +1 more
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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
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Journal ArticleDOI
Neutron Diffraction Study of the Irreversible R–MA–MC Phase Transition in Single Crystal Pb[(Zn1/3Nb2/3)1-xTix]O3
Kenji Ohwada,Kazuma Hirota,Paul W. Rehrig,Peter M. Gehring,Beatriz Noheda,Yasuhiko Fujii,Seung-Eek Park,G. Shirane +7 more
TL;DR: In this paper, the elastic scattering maps of the relaxor PZN x PT were mapped in each phase in the (H 0L) zone with high q -resolution. And the authors used triple-axis neutron scattering techniques so that the skin effect observed by x-ray scattering can be avoided, and the entire crystal bulk was probed.
Journal ArticleDOI
Effect of polar nanoregions on giant electrostriction and piezoelectricity in relaxor ferroelectrics
TL;DR: In this article, the role of polar nanoregions in relaxor ferroelectrics of lead magnesium niobate type is investigated in the framework of the spherical random bond--random-field model.
Journal ArticleDOI
Microstructural Origins of High Piezoelectric Performance: A Pathway to Practical Lead‐Free Materials
Journal ArticleDOI
Investigation of dielectric and piezoelectric properties in Pb(Ni1/3Nb2/3)O3-PbHfO3-PbTiO3 ternary system
H Tang,H Tang,Min Zhang,Min Zhang,Shujun Zhang,Shujun Zhang,Ying Feng,Fei Li,Thomas R. Shrout +8 more
TL;DR: In this article, the dielectric and piezoelectric properties were investigated in the (1−−x)Pb(Hf1−yTiy)O3-pb(Ni1/3Nb2/3) O3 (PNN-PHT, x = 0.05 −0.50, y= 0.55 -0.70) ternary system.
Journal ArticleDOI
Labile Ferroelastic Nanodomains in Bilayered Ferroelectric Thin Films
Varatharajan Anbusathaiah,Daisuke Kan,Fransiska Cecilia Kartawidjaja,Reza Mahjoub,Miryam Arredondo,Samantha Wicks,Ichiro Takeuchi,John Wang,Valanoor Nagarajan +8 more
TL;DR: In this article, it was shown that the ferroelastic-domain wall (extrinsic) contribution to the dielectric, piezoelectric and elastic properties of ferroelectrics is quite significant in the case of bulk ceramics and single-crystals, and this can be several times larger than the intrinsic lattice piezoresponse.
References
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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.
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Ultrahigh strain and piezoelectric behavior in relaxor based ferroelectric single crystals
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