Patent ID: 7485182

Claim:
A method for manufacturing a precursor composition including a precursor for forming a ferroelectric, wherein the ferroelectric is expressed by a general formula of AB 1-x C x O 3 , where an element A is composed of at least Pb, an element B is composed of at least one of Zr, Ti, V, W and Hf, and an element C is composed of at least one of Nb and Ta, the method comprising: mixing a sol-gel raw material including at least the element B and the element C, which is a sol-gel raw material including a hydrolysis-condensation product of a metal alkoxide, polycarboxylic acid or polycarboxylic acid ester, and an organic solvent; and forming the precursor having an ester-bond through esterification of the polycarboxylic acid or polycarboxylic acid derived from the polycarboxylic acid ester and the metal alkoxide.