| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Radiation Effects in Metals and Ceramics
|
| Presentation Title |
H-33: Irradiation Behavior of Piezoelectric Materials for Nuclear Reactor Sensors Applications |
| Author(s) |
Maha Yazbeck, Gaofeng Sha, Joel Hatch, Cole Harlow, Aleksandr Chernatynskiy, Joshua Daw, Marat Khafizov |
| On-Site Speaker (Planned) |
Maha Yazbeck |
| Abstract Scope |
Piezoelectric materials are key elements of ultrasonic sensors and are attractive for instrumentation of advanced nuclear systems. Our study investigates the impact of radiation damage on physical properties of piezoelectric aluminum nitride (AlN) and lithium niobate (LiNbO3). In this presentation, we demonstrate a novel approach to perform in-situ measurement of piezoelectric material behavior under irradiation in a research reactor based on interdigital transducer surface acoustic wave resonator (SAW) devices. Observed resonant frequency shifts, proportional to the neutron flux of the SAW device, were attributed to the changes in piezoelectric, elastic, and dielectric constants of AlN and LiNbO3 caused by accumulation of defects. Reversible nature of the resonant frequency shifts, characterized by a linear increase followed by a saturating exponential decay upon step increase of neutron flux, suggests that dynamic response of the device is governed by accumulation of self-interstitials and vacancies limited by mutual recombination. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |