Advantages and Challenges of Relaxor-PbTiO(3) Ferroelectric Crystals for Electroacoustic Transducers- A Review.
Advantages and Challenges of Relaxor-PbTiO(3) Ferroelectric Crystals for Electroacoustic Transducers- A Review.
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DOI：
10.1016/j.pmatsci.2014.10.002
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发表时间：
2015-03-01
影响因子：
37.4
通讯作者：
Geng, Xuecang
中科院分区：
文献类型：
--
作者：
Zhang, Shujun;Li, Fei;Jiang, Xiaoning;Kim, Jinwook;Luo, Jun;Geng, Xuecang
具有钙钛矿结构的弛豫PbTiO 3（PT）基铁电晶体由于其良好的压电系数（d33 > 1500 pC/N）和机电耦合因子（k33 > 90%）而在过去几十年中得到了研究，远远优于最先进的铁电多晶Pb（Zr，Ti）O3陶瓷，并且处于先进电声应用的最前沿。本文从压电材料的角度介绍了弛豫PT晶体在各种电声器件中的性能优势。机会不仅来自于晶体的特性，特别是耦合和压电系数，而且来自于新颖的振动模式和晶体学/畴工程。建立了具有不同组成和相的晶体的品质因数（FOM），用于各种应用，包括医疗超声换能器、水下换能器、声传感器和镊子。对于每种器件应用，调查了弛豫PT铁电晶体的最新发展，并与最先进的多晶压电体进行了比较，重点是它们的强各向异性特征和晶体学独特性，包括工程域-性质关系。本文首先介绍了电声换能器和压电材料的发展历史。高性能弛豫PT单晶的发展，重点是其独特的传感器应用，然后进行了讨论。在第三部分中，各种FOM的压电材料的广泛的超声应用，包括诊断超声，治疗超声，水下声学和被动传感器，触觉传感器和声学镊子，进行评估，以提供一个全面的了解材料的行为在操作条件下。然后建立结构-性质-性能关系。最后，弛豫PT晶体的影响和挑战进行了总结，以指导正在进行的和未来的研究，在下一代电声换能器的弛豫PT晶体的发展。
Relaxor-PbTiO3 (PT) based ferroelectric crystals with the perovskite structure have been investigated over the last few decades due to their ultrahigh piezoelectric coefficients (d33 > 1500 pC/N) and electromechanical coupling factors (k33 > 90%), far outperforming state-of-the-art ferroelectric polycrystalline Pb(Zr,Ti)O3 ceramics, and are at the forefront of advanced electroacoustic applications. In this review, the performance merits of relaxor-PT crystals in various electroacoustic devices are presented from a piezoelectric material viewpoint. Opportunities come from not only the ultrahigh properties, specifically coupling and piezoelectric coefficients, but through novel vibration modes and crystallographic/domain engineering. Figure of merits (FOMs) of crystals with various compositions and phases were established for various applications, including medical ultrasonic transducers, underwater transducers, acoustic sensors and tweezers. For each device application, recent developments in relaxor-PT ferroelectric crystals were surveyed and compared with state-of-the-art polycrystalline piezoelectrics, with an emphasis on their strong anisotropic features and crystallographic uniqueness, including engineered domain - property relationships. This review starts with an introduction on electroacoustic transducers and the history of piezoelectric materials. The development of the high performance relaxor-PT single crystals, with a focus on their uniqueness in transducer applications, is then discussed. In the third part, various FOMs of piezoelectric materials for a wide range of ultrasound applications, including diagnostic ultrasound, therapeutic ultrasound, underwater acoustic and passive sensors, tactile sensors and acoustic tweezers, are evaluated to provide a thorough understanding of the materials’ behavior under operational conditions. Structure-property-performance relationships are then established. Finally, the impacts and challenges of relaxor-PT crystals are summarized to guide on-going and future research in the development of relaxor-PT crystals for the next generation electroacoustic transducers.
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影响因子：
3
作者：
Alberta, EF;Bhalla, AS
通讯作者：
Bhalla, AS
影响因子：
5.4
作者：
Benayad, A;Sebald, G;Beylat, L
通讯作者：
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影响因子：
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作者：
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通讯作者：
Ye, ZG
DOI：
10.1109/tuffc.2007.362
发表时间：
2007-06-01
影响因子：
3.6
作者：
Amin, Ahmed;McLaughlin, Elizabeth;Ewart, Lynn
通讯作者：
Ewart, Lynn
DOI：
10.1088/0370-1301/64/4/305
发表时间：
1951-01-01
期刊：
PROCEEDINGS OF THE PHYSICAL SOCIETY OF LONDON SECTION B
影响因子：
--
作者：
BECHMANN, R
通讯作者：
BECHMANN, R