Open AccessTemperature‐compensated BAW orientations over 500°C on LGT for frequency control and sensor applications
Author(s) -
Davulis P.,
Cunha M. Pereira da
Publication year - 2013
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2012.3699
Subject(s) - piezoelectricity , materials science , atmospheric temperature range , dielectric , temperature coefficient , electromechanical coupling coefficient , coupling coefficient of resonators , acoustics , coupling (piping) , piezoelectric coefficient , temperature control , optoelectronics , resonator , physics , thermodynamics , composite material
Recently extracted langatate (LGT) elastic, piezoelectric and dielectric constants up to 900°C were utilised to predict the temperature coefficient of frequency (TCF) of bulk acoustic wave (BAW) orientations. A range of LGT BAW orientations were identified with turnover temperatures between 100 and 550°C for use in high‐temperature sensor and frequency control applications. In addition, the piezoelectric coupling of the identified orientations was investigated to determine the preferred cuts for high‐temperature operation.