Piezoelectric element and method for manufacturing piezoelectric element

There is a need for a piezoelectric element capable of improving a productivity and a yield without impairing the piezoelectric characteristic and a method for manufacturing the same. A piezoelectric element is provided with a substrate, a first electrode film disposed on the substrate, a piezoelect...

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Bibliographische Detailangaben
1. Verfasser: NAKASHIO EIJI,HONDA JUNICHI,TAMURA TAKASHI,SUZUKIKOJI,INAGUMA TERUO,AIZAWA MANABU,TAKAHASHI KAZUO,SAKURAI TADASHI
Format: Patent
Sprache:eng
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Zusammenfassung:There is a need for a piezoelectric element capable of improving a productivity and a yield without impairing the piezoelectric characteristic and a method for manufacturing the same. A piezoelectric element is provided with a substrate, a first electrode film disposed on the substrate, a piezoelectric film disposed on the first electrode film, and a second electrode film disposed on the piezoelectric film. The piezoelectric film has a laminated structure composed of a plurality of crystallized piezoelectric thin films. The piezoelectric film having a predetermined thickness is formed by repeated cycles of a film formation step and a crystallization heat treatment step. In this manner, a piezoelectric film exhibiting uniform crystallinity in the film thickness direction may be produced.