Title :
Fabrication of phased array probe using 0.93Pb(Zn13/Nb23/)O3-0.07PbTiO3 piezoelectric single crystals
Author :
Hosono, Y. ; Kobayashi, T. ; Harada, K. ; Itsumi, K. ; Izumi, M. ; Yamashita, Y.
Author_Institution :
Corp. Res. Dev. Center, Toshiba Corp., Kawasaki, Japan
Abstract :
Single crystals of 0.93Pb(Zn13/Nb23/)O3-0.07PbTiO3 (PZNT 93/7) with diameters of 40 mm were gown successfully by the solution Bridgman method with PbO flux. The PZNT 93/7 single crystal (SC) had excellent dielectric and piezoelectric properties equivalent to those of PZNT 91/9 SC and better thermal stability of the properties because of its high phase transition temperature, Trt. Moreover, phased array probes using the PZNT 93/7 SC were fabricated. The echo amplitudes and the bandwidths of the probes were almost the same as those of PZNT 91/9 SC probes. Therefore, we think that the PZNT 93/7 SC achieves the optimum balance between piezoelectric properties and their thermal stability and it is very suitable for medical transducers.
Keywords :
biomedical transducers; crystal growth from solution; lead compounds; piezoelectric materials; piezoelectric transducers; ultrasonic transducer arrays; 40 mm; Pb(Zn13/Nb23/)O3-PbTiO3; PbZnO3NbO3-PbTiO3; bandwidths; echo amplitudes; high phase transition temperature; medical transducers; phased array probe; piezoelectric single crystals; solution Bridgman method growth; thermal stability; Bandwidth; Biomedical transducers; Crystals; Dielectrics; Fabrication; Niobium; Phased arrays; Probes; Temperature; Thermal stability;
Conference_Titel :
Ultrasonics Symposium, 2002. Proceedings. 2002 IEEE
Print_ISBN :
0-7803-7582-3
DOI :
10.1109/ULTSYM.2002.1192515
