Surface acoustic waves in thin films of barium strontium titanate on magnesium oxide substrates |
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| Authors: | Vl. M. Mukhortov S. V. Biryukov Yu. I. Golovko G. Ya. Karapet’yan S. I. Masychev Vas. M. Mukhortov |
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| Affiliation: | 1.Southern Research Center,Russian Academy of Sciences,Rostov-on-Don,Russia;2.Research Institute of Radio Communications,Rostov-on-Don,Russia |
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| Abstract: | It is established that, using a thin barium strontium titanate (BST) film as the active element in a surface acoustic wave (SAW) device, it possible to double the working frequency of the converter due to the formation of a periodic domain structure in the BST film. A thin ferroelectric film device with a standard electrode structure is capable of effectively exciting the SAW second harmonic. Variation of the external polarizing voltage applied to the electrodes ensures field-controlled electromechanical feedback in the converter. |
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