Precursor sol-gel solution, electromechanical transducer element, liquid droplet discharge head, and inkjet recording apparatus

A method of fabricating a precursor sol-gel solution that is used for forming an oxide dielectric film having a perovskite structure represented by a general formula ABO3, the method comprising:

• a stabilization process step of suppressing a viscosity change resulting from a partial hydrolysis process step;
• and
• the partial hydrolysis process step;
• wherein the viscosity change before and after the partial hydrolysis process step is controlled to be less than or equal to 50%, and water contained in the precursor sol-gel solution after the partial hydrolysis process step is controlled to be greater than or equal to 0.50 times and less than or equal to 10 times by molar ratio with respect to a B site atom contained in the precursor sol-gel solution.