Enhanced piezoelectric and dielectric properties of AC poled sliver-mode Pb(In_1/2Nb_1/2)O₃-Pb(Mg_1/3Nb_2/3)O₃-PbTiO₃ single crystals for ultrasonic abdomen probes

Abstract

Effect of AC poling (ACP) on the dielectric and piezoelectric properties of diced sliver-mode vibrators (L13 × W0.15-0.30 × T0.51 mm3) was investigated for convex abdomen ultrasound probe that is made of a large Pb(In1/2Nb1/2)O3-Pb(Mg1/3Nb2/3)O3-0.3PbTiO3 (PIN-PMN-PT) single crystal (SC) plate (L13 × W60 × T0.51 mm3). The SC was manufactured by the continuous feeding Bridgman (CF-BM) method. The εT 33/ε0 aging rate (AR) of both DCP and ACP large plate SCs were found to be within 1%/decade suggesting no obvious property degradation. After array dicing, a considerable decrease in electromechanical and dielectric properties was observed. After a post-dicing DCP, the diced DCP-DCP 0.15 mm-wide SC sliver vibrators showed εT 33/ε0 and electromechanical coupling factor (k'33) of 4300 and 89.1%, respectively. The diced ACP-DCP 0.15 mm-wide SC sliver vibrators showed improved εT 33/ε0 and k'33 of 5980 and 92.2%, respectively, which are considerably useful in practical medical array transducer applications.

Piezoelectric properties of thin-plate Pb(Mg1/3Nb2/3)O3-PbTiO3 single crystals for high-frequency transducer

“…Several methods can be used to control the properties by modifying the surface and internal structures, such as domain engineering using nanoelectrodes [22][23][24] and alternative-current poling (ACP). [25][26][27][28][29][30] In particular, ACP is attracting to attention for improving the dielectric and piezoelectric properties, in addition to being a simple and low-cost method. However, the effect of ACP varies with the PT content and thickness of PMN-PT.…”

Enhanced electrical properties by AC poling of relaxor-Pb(Zr,Ti)O3 single crystals manufactured by the solid state crystal growth method

“…Due to the presence of these pores, the dicing processability of fine pitch arrays is very good, and edge chipping, which frequently occurs in BM SCs, does not occur. 31,34) In Relaxor-PT SCs, the different microstructures and piezoelectric properties can be attributed to various causes, i.e., the different compositions (PMN-PT, PMN -PZT, PIN-PMN-PT, PZN-PT, etc. ), phases (R, M, O, and T), surface condition (rough and fine surface), remanent mechanical stress, sample preparation method (with annealing, without annealing, broken surface, or etched surface), electrodes, poling, and measurement temperature.…”

“…19,20) After the first ACP report, more than 67 papers have been published over the last 5 years, and relationships between the electrical properties and the microstructures of ACP SCs have been investigated extensively. [21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36] However, there is no report on the microstructures of ACP SSCG SCs with d 33 > 4500 pC/N and ε 33 T /ε 0 > 13,000. Therefore, the purpose of this study is to investigate the relationships between the high electromechanical properties and these microstructures of ACP PMN-PZT SCs grown by the SSCG method.…”

Effect of strontium substitution on growth and piezoelectric properties of calcium magnesium silicate Ca2MgSi2O7 single crystals

“…Polar piezoelectric materials generally have a high dielectric constant and high piezoelectric constant d ij ; hence, they have been used in medical transducer and actuator devices. [2][3][4][5][6] On the other hand, nonpolar piezoelectric materials show a low dielectric constant and low d ij , but have higher phase transition temperatures. Therefore, their possible applications include gas sensors, 7) microbalance, 8) and combustion pressure sensors, 9) which operate at temperatures higher than 300 °C.…”