High coupling materials for thin film bulk acoustic wave resonators
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Pb(Zr, Ti)O-3 (PZT) is an interesting material for bulk acoustic wave resonator applications due to its high electromechanical coupling constant, which would enable fabrication of large bandwidth frequency filters. The major challenge of the PZT solid solu ...
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In this paper we report work on a modified potassium sodium niobate composition that has the potential to replace PZT for piezoelectric thin film applications. Pulsed laser depositions were undertaken on platinised Si substrates. The resultant films were f ...
In contrast to usual assumptions, it is shown that even when ferroelastic domain walls are inactive or absent, the motion of ferroelectrically active interfaces in ferroelectric materials contributes, at subcoercive electric fields, not only to the polariz ...
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Bulk PZT ceramics provide high electromechanical coupling (k) which is desirable for piezoelectric energy harvesters since the energy transformed from a mechanical agitation into an electrical output is proportional to k2 [1-2]. However, piezoelectric cant ...
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