학술논문

MEMS Using Epitaxial PZT Family
Document Type
Conference
Source
2023 IEEE International Symposium on Applications of Ferroelectrics (ISAF) Applications of Ferroelectrics (ISAF), 2023 IEEE International Symposium on. :1-5 Jul, 2023
Subject
Engineering Profession
Fields, Waves and Electromagnetics
Micromechanical devices
Buffer layers
Piezoelectric films
Transducers
Silicon
Epitaxial growth
III-V semiconductor materials
Epitaxial piezoelectric film
Sputter deposition
PZT
PMnN-PZT
PMN-PT
pMUT
Language
ISSN
2375-0448
Abstract
This paper summarizes the sputter deposition of epitaxial PZT family including PZT, PMnN-PZT, and Sm-doped PMN-PT and the development of pMUTs (piezoelectric micromachined transducers) using epitaxial PZT family films. The deposition method, the choice of buffer layers, and the results of characterization are briefly reported. Using epitaxial PZT, epitaxial PMnN-PZT, fibered epitaxial PZT and heterogeneously stacked piezoelectric films, various designs of pMUTs were fabricated and tested. The problem and challenges to address toward practical applications are also presented.