Surface and quasi-longitudinal acoustic waves in KTiOAsO4 single crystals |
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| Authors: | Rinat M Taziev |
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| Institution: | Institute of Semiconductor Physics SB RAS, Acad. Lavrentjev Avenue, 13, 630090 Novosibirsk, Russian Federation |
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| Abstract: | Surface and quasi-longitudinal acoustic wave properties have been investigated in potassium titanyl arsenate (KTiOAsO4, KTA) single crystals for the first time. Surface acoustic wave (SAW) velocity, electromechanical coupling coefficient and power flow angle characteristics have been obtained in rotated Y-cut of KTA crystals. High SAW electromechanical coupling coefficient (0.4%) is found in Z-cut of KTA crystals. For high-frequency devices it is promising the resonators on quasi-longitudinal acoustic wave in X-cut of KTA crystals with sharp response in interdigital transducer conductance at resonance frequency. |
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| Keywords: | Potassium titanyl arsenate (KTiOAsO4 KTA) Surface acoustic wave Quasi-longitudinal acoustic wave Effective permittivity function |
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