How to qualify LGT crystal for acoustic devices?

Author

Allani, M. ; Vacheret, X. ; Clairet, A. ; Baron, T. ; Boy, Jj ; Reibel, C. ; Cambon, O. ; Lesage, J.M. ; Bel, O. ; Cabane, H. ; Pecheyran, C.

Author_Institution

FEMTO-ST Inst., UTBM, Besançon, France

fYear

2015

fDate

12-16 April 2015

Firstpage

100

Lastpage

105

Abstract

Before using any piezoelectric crystal to realize acoustic devices (sensors, transducers, actuators or ultra-stable resonators) and beyond its mechanical properties, the crystal material itself has to be characterized. Whether the very interesting properties of the LGT crystal make it the best candidate to substitute quartz crystal for frequency output devices, we must take into account the crystal quality. Indeed, applications require homogeneous crystals with reproducible physical properties.

Keywords

acoustic resonators; bulk acoustic wave devices; crystal structure; electrical resistivity; gallium compounds; infrared spectra; lanthanum compounds; laser ablation; mass spectroscopic chemical analysis; paramagnetic resonance; piezoelectric materials; ultraviolet spectra; visible spectra; ESR; ICP-MS; IR spectra; LGT crystal; La₃Ga_5.5Ta_0.5O₁₄; UV-vis spectrometry; acoustic devices; bulk acoustic wave resonators; crystal quality; electrical resistivity; electron spin resonance; femtosecond laser ablation; structural defects; Absorption; Annealing; Color; Crystals; Gallium; Impurities; Optical resonators; BAW resonator; ESR; ICP-MS; LGS crystals family; electrical resistivity; optical spectrometry;

fLanguage

English

Publisher

ieee

Conference_Titel

Frequency Control Symposium & the European Frequency and Time Forum (FCS), 2015 Joint Conference of the IEEE International

Conference_Location

Denver, CO

Print_ISBN

978-1-4799-8865-5

Type

conf

DOI

10.1109/FCS.2015.7138800

Filename

7138800