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DC bias field dependent high overtone resonances are observed in a metal insulator metal (MIM) structure based on Ba0.5Sr0.5TiO3 (BST) thin films on a sapphire substrate. The microwave measurement shows the bias dependent nature of the device, wherein without any bias it acts like a MIM capacitor but upon biasing resonant peaks start appearing in its frequency spectra, which is typical of a response...
High overtone bulk acoustic wave resonator (HBAR) employing piezoelectric thin films were designed and the effect of the crucial piezoelectric layer thickness on the resonator characteristics were studied. Numerical simulation is carried out for two different kinds of HBAR with two different Piezoelectric-films on a YAG substrate. By studying the frequency spectra of HBAR and finding the parallel...
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