PIEZOELECTRIC CERAMIC COMPOSITION AND PIEZOELECTRIC CERAMIC ELEMENT USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a piezoelectric ceramic composition which lowers a temperature at which a piezoelectric ceramic composition comprising SrBi4 Ti4 O15 as the main component can be fired and is useful as a material for piezoelectric ceramic elements such as a piezoelectric ceramic filter, a piezoelectric ceramic oscillator and a piezoelectric ceramic vibrator exhibiting such an electromechanical coupling factor (k) as to make the elements to be put to practical use at <=1,100 deg.C firing temperature and to provide piezoelectric elements using the piezoelectric ceramic composition. SOLUTION: The piezoelectric ceramic composition contains >0 to 0.075 mol of at least one of Si and W based on 1 mol Bi in a piezoelectric ceramic composition comprising SrBi4 Ti4 O15 as the main component.