Electrical Characteristics of Ultrasonic Piezoelectric Devices Using Pb0.88 (La0.6 Sm0.4)0.08 (Mn1/3 Sb2/3)0.02 Ti0.98 O3 Ceramics for Alleviating Temporomandibular Joint Disorder Pain

Abstract

In this study, to develop the composition ceramics for the application of an ultrasonic transducer device for alleviating temporomandibular joint disorder pain, Pb0.88 (La0.6 Sm0.4)0.08(Mn1/3 Sb2/3)0.02Ti0.98 O3 ceramics were manufactured using CuO as sintering aids, and their piezoelectric and resonant properties were investigated. For the specimen sintered at 1200 °C, excellent values of piezoelectric properties appeared: the dielectric constant (εr) of 202, piezoelectric constant (d33) of 56 pC/N, first and third overtone electromechanical coupling factors kt of 0.548 and kt3 of 0.219, and first and third overtone mechanical quality factors Qmt1 of 345 and Qmt3 of 292, respectively, made the device suitable for application as an ultrasonic transducer. When the length of the piezoelectric device was 7.7 mm, the first and third overtone electromechanical coupling factors kt1 of 0.555 and kt3 of 0.196, first and third overtone mechanical quality factors Qmt1 of 381 and Qmt3 of 393, and first and third overtone dynamic ratios (D.Rs) of 63.7 (dB) and 37.7 (dB) were suitable for device applications as an ultrasonic transducer and facial skin massage, respectively.