Title :
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
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; La3Ga5.5Ta0.5O14; 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;
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
DOI :
10.1109/FCS.2015.7138800
