Abstract
Complex system ceramics Pb(Sc 1/2 Nb 1/2 )O 3 -Pb (Mg 1/3 Nb 2/3 )O 3 -Pb(Ni 1/2 Nb 1/2 )O 3 -(Pb 0.965 ,Sr 0.035 )(Zr,Ti) O 3 (PSN-PMN-PNN-PSZT abbreviated to PSMNZT) with extremely high dielectric constants, e T 33 /e 0 and e S 33 /e 0 , have been synthesized by the conventional technique and the dielectric and piezoelectric properties of the ceramics have been investigated for ultrasonic medical transducers. On the other hand, relaxor-PbTiO 3 single crystals (SCs) of xPb(In1/2Nbi/2)03-yPb(Mgi/3Nb2/3)03-zPbTi03 (PIN-PMN-PT abbreviated to PIMNT 100x/100y/100z) with high phase transition temperature between rhombohedral and tetragonal phase, T rt , and high Curie temperature, Tc, have been investigated for medical array transducers in order to overcome the shortcomings of the binary SCs such as 0.91Pb(Zn 1/3 Nb 2/3 )O 3 -0.09PbTi03 (PZNT91/9) and 0.68Pb(Mg 1/3 Nb 2 /3)03-0.32PbTiO 3 (PMNT68/32). Moreover, the pulse echo characteristics of the ultrasonic probes using the piezoelectric ceramic and piezoelectric SC are discussed on the basis of simulation employing Mason's model in this paper.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
