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Scaling effects of relaxor-PbTiO3 crystals and composites for high frequency ultrasound

Journal Article


Abstract


  • The dielectric and piezoelectric properties of Pb(Mg1/3Nb 2/3)O3-PbTiO3 (PMN-PT) and Pb(In 1/2Nb1/2)O3-Pb(Mg1/3Nb 2/3)O3-PbTiO3 (PIN-PMN-PT) ferroelectric single crystals were investigated as a function of thickness/scale in monolithic and piezoelectric/polymer 1-3 composites. For the case of PMN-PT single crystals, the dielectric (��33T/��0) and electromechanical properties (k33) were found to significantly decrease with decreasing thickness (500-40 ��m), while minimal thickness dependency was observed for PIN-PMN-PT single crystals. Temperature dependent dielectric behavior of the crystals suggested that the observed thickness dependence in PMN-PT was strongly related to their relatively large domain size (>10-20 ��m). As anticipated, 1-3 composite comprised of PIN-PMN-PT crystals exhibited superior properties to that of PMN-PT composite at high frequencies (>20 MHz). However, the observed couplings, being on the order of 80%, were disappointedly low when compared to their monolithic counterparts, the result of surface damage introduced during the dicing process, as evidenced by the broadened [002] peaks in the x-ray diffraction pattern. �� 2010 American Institute of Physics.

Publication Date


  • 2010

Citation


  • Lee, H. J., Zhang, S., & Shrout, T. R. (2010). Scaling effects of relaxor-PbTiO3 crystals and composites for high frequency ultrasound. Journal of Applied Physics, 107(12). doi:10.1063/1.3437068

Scopus Eid


  • 2-s2.0-77954202126

Volume


  • 107

Issue


  • 12

Place Of Publication


Abstract


  • The dielectric and piezoelectric properties of Pb(Mg1/3Nb 2/3)O3-PbTiO3 (PMN-PT) and Pb(In 1/2Nb1/2)O3-Pb(Mg1/3Nb 2/3)O3-PbTiO3 (PIN-PMN-PT) ferroelectric single crystals were investigated as a function of thickness/scale in monolithic and piezoelectric/polymer 1-3 composites. For the case of PMN-PT single crystals, the dielectric (��33T/��0) and electromechanical properties (k33) were found to significantly decrease with decreasing thickness (500-40 ��m), while minimal thickness dependency was observed for PIN-PMN-PT single crystals. Temperature dependent dielectric behavior of the crystals suggested that the observed thickness dependence in PMN-PT was strongly related to their relatively large domain size (>10-20 ��m). As anticipated, 1-3 composite comprised of PIN-PMN-PT crystals exhibited superior properties to that of PMN-PT composite at high frequencies (>20 MHz). However, the observed couplings, being on the order of 80%, were disappointedly low when compared to their monolithic counterparts, the result of surface damage introduced during the dicing process, as evidenced by the broadened [002] peaks in the x-ray diffraction pattern. �� 2010 American Institute of Physics.

Publication Date


  • 2010

Citation


  • Lee, H. J., Zhang, S., & Shrout, T. R. (2010). Scaling effects of relaxor-PbTiO3 crystals and composites for high frequency ultrasound. Journal of Applied Physics, 107(12). doi:10.1063/1.3437068

Scopus Eid


  • 2-s2.0-77954202126

Volume


  • 107

Issue


  • 12

Place Of Publication