Production of a piezo-ceramic thin layer used as a material for an electromechanical converter comprises preparing a substrate and a piezo-ceramic starting composition, applying onto the substrate surface and heat treating

摘要

#CMT# #/CMT# Production of a piezo-ceramic thin layer comprises preparing a substrate with a surface and preparing a piezo-ceramic starting composition, applying the starting composition onto the substrate surface and heat treating the starting composition producing the piezo-ceramic thin layer. The piezo-ceramic starting composition has a stoichiometric sodium and a potassium excess compared with the stoichiometric piezo-ceramic material starting composition. #CMT# : #/CMT# An independent claim is also included for an arrangement of a piezo-ceramic thin layer applied on an electrically conducting substrate. #CMT#USE : #/CMT# Used as a material for an electromechanical converter or digital storage medium (claimed). #CMT#ADVANTAGE : #/CMT# The piezo-ceramic thin layer has good piezo-electrical properties. #CMT#CERAMICS AND GLASS : #/CMT# Preferred Features: The starting composition is molded before being heat treated. A sol-gel layer is produced on a support in the molding step which is then converted into the piezo-ceramic thin layer during heat treatment. The starting composition has a lithium content of up to 15 mol.% of the stoichiometric piezo-ceramic material starting composition.