Abstract
The face-shear vibration modes of [011] poled Zt ± 45° cut relaxor-PT crystals and their applications for linear piezoelectric motors were investigated. Unlike piezoelectric ceramics, the rotated crystal was found to exhibit asymmetric face-shear deformations, and its two high-order face-shear modes degraded into two non-isomorphic modes. As an application example, a standing wave ultrasonic linear motor (10 × 10 × 2 mm3) operating in high-order face-shear vibration modes was developed. The motor exhibits a large driving force (1.5 N) under a low driving voltage (22 V pp). These findings could provide guidance for design of crystal resonance devices.
Original language | English (US) |
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Article number | 242911 |
Journal | Applied Physics Letters |
Volume | 104 |
Issue number | 24 |
DOIs | |
State | Published - Jun 16 2014 |
All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)