Surface Acoustic Wave Propagation in Relaxor-Based Ferroelectric Single Crystals 0.93Pb(Zn
 1/3
 Nb
 2/3
 )O
 3
 -0.07PbTiO
 3
 Poled along [011]
 
 c

Li, Xiu Ming; Zhang, Rui; Huang, Nai Xing; Tian, Lu; Cao, Wenwu

doi:10.1088/0256-307x/29/2/024302

Cited by 5 publications

(2 citation statements)

References 14 publications

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“…The electromechanical coupling factor was found to be much higher than that of traditional piezoelectric materials. The power flow angle (PFA) can be zero in certain directions, which makes this crystal system a promising material for future SAW devices with much smaller size and enhanced performance [348,349,350,351]. …”

Section: Acoustic Propertiesmentioning

confidence: 99%

Relaxor-based ferroelectric single crystals: Growth, domain engineering, characterization and applications

Sun

Cao

2014

Progress in Materials Science

540

264

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In the past decade, domain engineered relaxor-PT ferroelectric single crystals, including (1-x)Pb(Mg1/3Nb2/3)O3-xPbTiO3 (PMN-PT), (1-x)Pb(Zn1/3Nb2/3)O3-xPbTiO3 (PZN-PT) and (1-x-y)Pb(In1/2Nb1/2)O3-yPb(Mg1/3Nb2/3)O3-xPbTiO3 (PIN-PMN-PT), with compositions near the morphotropic phase boundary (MPB) have triggered a revolution in electromechanical devices owing to their giant piezoelectric properties and ultra-high electromechanical coupling factors. Compared to traditional PbZr1-xTixO3 (PZT) ceramics, the piezoelectric coefficient d33 is increased by a factor of 5 and the electromechanical coupling factor k33 is increased from < 70% to > 90%. Many emerging rich physical phenomena, such as charged domain walls, multi-phase coexistence, domain pattern symmetries, etc., have posed challenging fundamental questions for scientists. The superior electromechanical properties of these domain engineered single crystals have prompted the design of a new generation electromechanical devices, including sensors, transducers, actuators and other electromechanical devices, with greatly improved performance. It took less than 7 years from the discovery of larger size PMN-PT single crystals to the commercial production of the high-end ultrasonic imaging probe “PureWave”. The speed of development is unprecedented, and the research collaboration between academia and industrial engineers on this topic is truly intriguing. It is also exciting to see that these relaxor-PT single crystals are being used to replace traditional PZT piezoceramics in many new fields outside of medical imaging. The new ternary PIN-PMN-PT single crystals, particularly the ones with Mn-doping, have laid a solid foundation for innovations in high power acoustic projectors and ultrasonic motors, hinting another revolution in underwater SONARs and miniature actuation devices. 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. It outlines a truly encouraging story in materials science in the modern era. All key references are provided and 30 complete sets of material parameters for different types of relaxor-PT single crystals are listed in the Appendix. It is the intension of this review article to serve as a resource for those who are interested in basic research and practical applications of these relaxor-PT single crystals. In addition, possible mechanisms of giant piezoelectric properties in these domain-engineered relaxor-PT systems will be discussed based on contributions from polarization rotation and charged domain walls.

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Section: Acoustic Propertiesmentioning

confidence: 99%

Relaxor-based ferroelectric single crystals: Growth, domain engineering, characterization and applications

Sun

Cao

2014

Progress in Materials Science

540

264

View full text Add to dashboard Cite

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“…At present, the optimal acoustic impedance gradient distribution of the matching layer is still not clear; it requires a volume ratio of high-impedance filler powder to gradually decrease along the direction of the acoustic wave propagation and achieve a large and smooth acoustic impedance span in a very thin thickness range [ 29 , 30 , 31 , 32 , 33 , 34 , 35 ]. In this paper, we confirmed the ideal acoustic impedance distribution mode and the thickness of the matching layer by simulation and realized this distribution by using nano tungsten powder with high acoustic impedance and epoxy resin to create a kind of anisotropic inhomogeneous material.…”

Section: Introductionmentioning

confidence: 99%

Enhancement of Ultrasonic Transducer Bandwidth by Acoustic Impedance Gradient Matching Layer

Zhu

Ma²,

Qi³

et al. 2022

Sensors

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High-performance broadband ultrasound transducers provide superior imaging quality in biomedical ultrasound imaging. However, a matching design that perfectly transmits the acoustic energy between the active piezoelectric element and the target medium over the operating spectrum is still lacking. In this work, an anisotropic gradient acoustic impedance composite material as the matching layer of an ultrasonic transducer was designed and fabricated; it is a non-uniform material with the continuous decline of acoustic impedance along the direction of ultrasonic propagation in a sub-wavelength range. This material provides a broadband window for ultrasonic propagation in a wide frequency range and achieves almost perfect sound energy transfer efficiency from the piezoelectric material to the target medium. Nano tungsten particles and epoxy resin were selected as filling and basic materials, respectively. Along the direction of ultrasonic propagation, the proportion of tungsten powder was carefully controlled to decrease gradually, following the natural exponential form in a very narrow thickness range. Using this new material as a matching layer with high-performance single crystals, the −6 dB bandwidth of the PMN-PT ultrasonic transducer could reach over 170%, and the insertion loss was only −20.3 dB. The transducer achieved a temporal signal close to a single wavelength, thus there is the potential to dramatically improve the resolution and imaging quality of the biomedical ultrasound imaging system.

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SH Waves in (1 –x)Pb(Mg1/3Nb2/3)O3- xPbTiO3 Piezoelectric Layered Structures Loaded with Viscous Liquid

Nie

Liu

Kong

et al. 2016

Acta Mechanica Solida Sinica

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Surface Acoustic Wave Propagation in Relaxor-Based Ferroelectric Single Crystals 0.93Pb(Zn _1/3 Nb _2/3 )O ₃ -0.07PbTiO ₃ Poled along [011] _c

Cited by 5 publications

References 14 publications

Relaxor-based ferroelectric single crystals: Growth, domain engineering, characterization and applications

Relaxor-based ferroelectric single crystals: Growth, domain engineering, characterization and applications

Enhancement of Ultrasonic Transducer Bandwidth by Acoustic Impedance Gradient Matching Layer

SH Waves in (1 –x)Pb(Mg1/3Nb2/3)O3- xPbTiO3 Piezoelectric Layered Structures Loaded with Viscous Liquid

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Surface Acoustic Wave Propagation in Relaxor-Based Ferroelectric Single Crystals 0.93Pb(Zn 1/3 Nb 2/3 )O 3 -0.07PbTiO 3 Poled along [011] c

Cited by 5 publications

References 14 publications

Relaxor-based ferroelectric single crystals: Growth, domain engineering, characterization and applications

Relaxor-based ferroelectric single crystals: Growth, domain engineering, characterization and applications

Enhancement of Ultrasonic Transducer Bandwidth by Acoustic Impedance Gradient Matching Layer

SH Waves in (1 –x)Pb(Mg1/3Nb2/3)O3- xPbTiO3 Piezoelectric Layered Structures Loaded with Viscous Liquid

Contact Info

Product

Resources

About

Surface Acoustic Wave Propagation in Relaxor-Based Ferroelectric Single Crystals 0.93Pb(Zn _1/3 Nb _2/3 )O ₃ -0.07PbTiO ₃ Poled along [011] _c