Reduction of temperature coefficient of frequency in LiTaO3 single crystals for surface acoustic wave applications

Author

Bartasyte, A. ; Elmazria, O. ; Gonzalez, M. ; Bouvot, L. ; Blampain, E. ; Boulet, P.

Author_Institution

Inst. Jean Lamour, Univ. de Lorraine, Vandeouvre-les-Nancy, France

fYear

2012

fDate

9-13 July 2012

Firstpage

1

Lastpage

3

Abstract

Temperature coefficient of frequency of LiTaO₃ single crystals was tuned by changing the Li stoichiometry. For this purpose, congruent 36°Y cut crystals, available commercially, were treated by vapor transport equilibration and temperature coefficient of frequency of surface acoustic waves propagating along X-axis as a function of Li concentration was studied. The temperature coefficient of frequency of -7 ppm/° was achieved for surface acoustic waves propagating in the crystals containing 49.43 mol % of Li₂O.

Keywords

acoustic wave propagation; lithium compounds; stoichiometry; surface acoustic waves; LiTaO₃; congruent cut crystals; single crystals; stoichiometry; surface acoustic wave applications; surface acoustic wave propagation; temperature coefficient of frequency; vapor transport equilibration; Crystals; Lithium niobate; Surface acoustic wave devices; Surface acoustic waves; Temperature measurement; Thermal stability; Li stoichiometry; LiTaO3; surface acoustic waves (SAW); temperature coefficient of frequency (TCF);

fLanguage

English

Publisher

ieee

Conference_Titel

Applications of Ferroelectrics held jointly with 2012 European Conference on the Applications of Polar Dielectrics and 2012 International Symp Piezoresponse Force Microscopy and Nanoscale Phenomena in Polar Materials (ISAF/ECAPD/PFM), 2012 Intl Symp

Conference_Location

Aveiro

Print_ISBN

978-1-4673-2668-1

Type

conf

DOI

10.1109/ISAF.2012.6297858

Filename

6297858