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Advantages and challenges of relaxor-PbTiO3 ferroelectric crystals for electroacoustic transducers - A review

Journal Article


Abstract


  • 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 stateof-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,

    acoustic tweezers and ultrasonic motors, 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.

UOW Authors


  •   Zhang, Shujun
  •   Li, Fei (external author)
  •   Jiang, Xiaoning (external author)
  •   Kim, Jinwook (external author)
  •   Luo, Jun (external author)
  •   Geng, Xuecang (external author)

Publication Date


  • 2015

Citation


  • Zhang, S., Li, F., Jiang, X., Kim, J., Luo, J. & Geng, X. (2015). Advantages and challenges of relaxor-PbTiO3 ferroelectric crystals for electroacoustic transducers - A review. Progress In Materials Science, 68 1-66.

Scopus Eid


  • 2-s2.0-84911166788

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/2851

Number Of Pages


  • 65

Start Page


  • 1

End Page


  • 66

Volume


  • 68

Place Of Publication


  • United Kingdom

Abstract


  • 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 stateof-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,

    acoustic tweezers and ultrasonic motors, 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.

UOW Authors


  •   Zhang, Shujun
  •   Li, Fei (external author)
  •   Jiang, Xiaoning (external author)
  •   Kim, Jinwook (external author)
  •   Luo, Jun (external author)
  •   Geng, Xuecang (external author)

Publication Date


  • 2015

Citation


  • Zhang, S., Li, F., Jiang, X., Kim, J., Luo, J. & Geng, X. (2015). Advantages and challenges of relaxor-PbTiO3 ferroelectric crystals for electroacoustic transducers - A review. Progress In Materials Science, 68 1-66.

Scopus Eid


  • 2-s2.0-84911166788

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/2851

Number Of Pages


  • 65

Start Page


  • 1

End Page


  • 66

Volume


  • 68

Place Of Publication


  • United Kingdom