Abstract

Piezoelectric ZnO films on glass substrate were deposited by an RF mode ECR sputtering system. It was confirmed that in the ZnO films deposited by this system, a smooth sidewall structure of ZnO film without coarse columnar (fibre) grains was observed and that driving a 1.1 GHz fundamental mode of a Rayleigh SAW on ZnO/IDT/glass structure was possible at λ = 2.4 μm.

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