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

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6 Author(s)
Bartasyte, A. ; Inst. Jean Lamour, Univ. de Lorraine, Vandeouvre-les-Nancy, France ; Elmazria, O. ; Gonzalez, M. ; Bouvot, L.
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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.

Published in:

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

Date of Conference:

9-13 July 2012