Presentation Information
[18p-C301-10]AC-poling and piezoelectric properties of Mn doped Pb(Mg1/3Nb2/3)O3-Pb(Zr,Ti)O3 single crystals grown by solid state crystal growth process
〇Hiroshi Maiwa1, Yushi Yamagata1, Yu Xiang1, Xi Chen1, Yohachi Yamashita1,2, Ho-Yong Lee3 (1.Shonan Inst. Tech., 2.NC State Univ., 3.Ceracomp Co. Ltd.)
Keywords:
Piezoelectric single crystal,AC poling,Solid state crystal growth
The single crystal (SC) with AC poling cycle (ACP) numbers up to 60000 exhibited piezoelectric strain and charge constants d33 = 1130 pC/N, g33 = 44.6 × 10-3Vm/N, figure of merit (FOM) = d33 × g33 = 50.6 pm2/N, and low acoustic impedance Z33= 30 MRayls, which is 20% lower than that of Bridgman growth SCs.
The Pb(Mg1/3Nb2/3)O3-0.3Pb(Zr.Ti)O3 (PMN-0.3PZT) SC grown by solid state crystal growth (SSCG) had high mechanical quality factor Qm>500 and low loss = 0.3%. In addition, the piezoelectric response (d33> 500 pC/N) remained after thermal annealing at 250 °C without any poling, which is called self-poling. And the ACP SC showed a 13°C increase in phase change temperature Trt compared to the DCP SC. This information of ACP SSCG SCs with excellent thermal stability, better Z33 matching to water, and high receiving efficiency contributed by high g33 gives a new insight of ultrasonic devices.
The Pb(Mg1/3Nb2/3)O3-0.3Pb(Zr.Ti)O3 (PMN-0.3PZT) SC grown by solid state crystal growth (SSCG) had high mechanical quality factor Qm>500 and low loss = 0.3%. In addition, the piezoelectric response (d33> 500 pC/N) remained after thermal annealing at 250 °C without any poling, which is called self-poling. And the ACP SC showed a 13°C increase in phase change temperature Trt compared to the DCP SC. This information of ACP SSCG SCs with excellent thermal stability, better Z33 matching to water, and high receiving efficiency contributed by high g33 gives a new insight of ultrasonic devices.
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