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Thickness-dependent properties of relaxor-PbTiO3 ferroelectrics for ultrasonic transducers

Journal Article


Abstract


  • The electrical properties of Pb(Mg1/3Nb2/3)O 3-PbTiO3 (PMN-PT)-based polycrystalline ceramics and single crystals were investigated as a function of scale ranging from 500 μm to 30 μm. Fine-grained PMN-PT ceramics exhibited comparable dielectric and piezoelectric properties to their coarsegrained counterpart in the low frequency range (<10 MHz), but offered greater mechanical strength and improved property stability with decreasing thickness, corresponding to higher operating frequencies (>40 MHz). For PMN-PT single crystals, however, the dielectric and electromechanical properties degraded with decreasing thickness, while ternary Pb(In1/2Nb1/2)O3- Pb(Mg 1/3Nb2/3)O3-PbTiO3 (PIN-PMN-PT) exhibited minimal size-dependent behavior. The origin of property degradation of PMN-PT crystals was further studied by investigating the dielectric permittivity at high temperatures, and domain observations using optical polarized light microscopy. The results demonstrated that the thickness-dependent properties of relaxor-PT ferro- electrics are closely related to the domain size with respect to the associated macroscopic scale of the samples. © 2010 WILEY-VCH Verlag GmbH & Co. KGaA.

Authors


  •   Lee, Hyeong Jae. (external author)
  •   Zhang, Shujun
  •   Luo, Jun (external author)
  •   Li, Fei (external author)
  •   Shrout, Thomas R. (external author)

Publication Date


  • 2010

Citation


  • Lee, H. Jae., Zhang, S., Luo, J., Li, F. & Shrout, T. R. (2010). Thickness-dependent properties of relaxor-PbTiO3 ferroelectrics for ultrasonic transducers. Advanced Functional Materials, 20 (18), 3154-3162.

Scopus Eid


  • 2-s2.0-77957189197

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/2096

Has Global Citation Frequency


Number Of Pages


  • 8

Start Page


  • 3154

End Page


  • 3162

Volume


  • 20

Issue


  • 18

Place Of Publication


  • Germany

Abstract


  • The electrical properties of Pb(Mg1/3Nb2/3)O 3-PbTiO3 (PMN-PT)-based polycrystalline ceramics and single crystals were investigated as a function of scale ranging from 500 μm to 30 μm. Fine-grained PMN-PT ceramics exhibited comparable dielectric and piezoelectric properties to their coarsegrained counterpart in the low frequency range (<10 MHz), but offered greater mechanical strength and improved property stability with decreasing thickness, corresponding to higher operating frequencies (>40 MHz). For PMN-PT single crystals, however, the dielectric and electromechanical properties degraded with decreasing thickness, while ternary Pb(In1/2Nb1/2)O3- Pb(Mg 1/3Nb2/3)O3-PbTiO3 (PIN-PMN-PT) exhibited minimal size-dependent behavior. The origin of property degradation of PMN-PT crystals was further studied by investigating the dielectric permittivity at high temperatures, and domain observations using optical polarized light microscopy. The results demonstrated that the thickness-dependent properties of relaxor-PT ferro- electrics are closely related to the domain size with respect to the associated macroscopic scale of the samples. © 2010 WILEY-VCH Verlag GmbH & Co. KGaA.

Authors


  •   Lee, Hyeong Jae. (external author)
  •   Zhang, Shujun
  •   Luo, Jun (external author)
  •   Li, Fei (external author)
  •   Shrout, Thomas R. (external author)

Publication Date


  • 2010

Citation


  • Lee, H. Jae., Zhang, S., Luo, J., Li, F. & Shrout, T. R. (2010). Thickness-dependent properties of relaxor-PbTiO3 ferroelectrics for ultrasonic transducers. Advanced Functional Materials, 20 (18), 3154-3162.

Scopus Eid


  • 2-s2.0-77957189197

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/2096

Has Global Citation Frequency


Number Of Pages


  • 8

Start Page


  • 3154

End Page


  • 3162

Volume


  • 20

Issue


  • 18

Place Of Publication


  • Germany