Journal ArticleDOI
Relaxor based ferroelectric single crystals for electro-mechanical actuators
Seung-Eek Park,Thomas R. Shrout +1 more
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In this paper, the piezoelectric properties of relaxor based ferroelectric single crystals, such as Pb(Zn1/3Nb2/3)O3−PbTiO3 (PZN-PT), were investigated for electromechanical actuators.Abstract:
The piezoelectric properties of relaxor based ferroelectric single crystals, such as Pb(Zn1/3Nb2/3)O3−PbTiO3 (PZN-PT) and Pb(Mg1/3Nb2/3)O3−PbTiO3 (PMN-PT) were investigated for electromechanical actuators. In contrast to polycrystalline materials such as Pb(Zr,Ti)O3 (PZTs), morphotropic phase boundary (MPB) compositions were not essential for high piezoelectric strain. Piezoelectric coefficients (d33’s ) >2200 pC/N and subsequent strain levels up to >0.5% with minimal hysteresis were observed. Crystallographically, high strains are achieved for oriented rhombohedral crystals, though is the polar direction. Ultrahigh strain levels up to 1.7%, an order of magnitude larger than those available from conventional piezoelectric and electrostrictive ceramics could be achieved, possibly being related to an E-field induced phase transformation. High electromechanical coupling (k33) >90% and low dielectric loss <1%, along with large strain make these crystals promising candidates for high performance solid state actuators.read more
Citations
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Journal ArticleDOI
Decoding the Fingerprint of Ferroelectric Loops: Comprehension of the Material Properties and Structures
TL;DR: In this paper, the impact factors on the hysteresis loops are discussed based on recent developments in ferroelectric and related materials, including the effect of materials (grain size and grain boundary, phase and phase boundary, doping, anisotropy, thickness), aging, and measurement conditions (applied field amplitude, fatigue, frequency, temperature, stress), which can affect the hysteretic behaviors of the ferroelectrics.
Journal ArticleDOI
High performance ferroelectric relaxor-PbTiO3 single crystals: Status and perspective
Shujun Zhang,Fei Li,Fei Li +2 more
TL;DR: In this paper, a perspective and future development of relaxor-PbTiO3 (PT) piezoelectric materials are given. And the physical origins and unique loss characteristics in relaxorPT crystals are discussed with respect to their crystal structure.
Journal ArticleDOI
Advantages and Challenges of Relaxor-PbTiO3 Ferroelectric Crystals for Electroacoustic Transducers- A Review.
TL;DR: In this review, the performance merits of relaxor-PT crystals in various electroacoustic devices are presented from a piezoelectric material viewpoint and the impacts and challenges are summarized to guide on-going and future research in the development of relaxors for the next generation electroac acoustic transducers.
Journal ArticleDOI
Relaxor-based ferroelectric single crystals: growth, domain engineering, characterization and applications.
Enwei Sun,Wenwu Cao +1 more
TL;DR: This article intends to provide a comprehensive review on the development of relaxor-PT single crystals, spanning material discovery, crystal growth techniques, domain engineering concept, and full-matrix property characterization all the way to device innovations.
Journal ArticleDOI
Electrostrictive effect in ferroelectrics: An alternative approach to improve piezoelectricity
TL;DR: In this paper, the electrostrictive effect of perovskite solid solutions was systematically surveyed and the techniques for measuring the effect of electrostriction on the piezoelectric activity of these materials were presented.
References
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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
Dielectric and Piezoelectric Properties of 0.91Pb(Zn1/3Nb2/3)O3-0.09PbTiO3 Single Crystals
TL;DR: In this article, the dielectric, piezoelectric and elastic properties of 0.91(PbZn1/3Nb2/3)O3−0.09PbTiO3 single crystals have been investigated as functions of temperature and applied electric field.
Journal ArticleDOI
Characteristics of relaxor-based piezoelectric single crystals for ultrasonic transducers
Seung-Eek Park,Thomas R. Shrout +1 more
TL;DR: In this article, relaxor-based materials with the general formula, Pb(B/sub 1/3/Nb/sub 2/3/)O/sub 3/PbTiO/Sub 3/ (PZN-PT), have been shown to have superior dielectric and piezoelectric performance compared to that of PZT materials.
Journal ArticleDOI
Phase transitions in the Pb (Zn1/3Nb2/3)O3-PbTiO3 system
TL;DR: In this article, two successive phase transitions, changing the crystal symmetry from rhombohedral to tetragonal, and then to cubic on a heating process, have been investigated in the Pb(Zn1/3Nb2/3)O3-PbTiO3 single crystals with the composition near the morphotropic phase boundary.
Journal ArticleDOI
Piezoelectric transducer materials
H. Jaffe,D.A. Berlincourt +1 more
TL;DR: In this paper, the properties of piezoelectric crystals and ceramics are reviewed as they affect use of such materials in electroacoustic transducers and extensive data on lead titanate-zirconate-ceramics is presented to help in selection of the appropriate material for a variety of applications in the lower and medium frequency range.
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