Coating liquid composition for forming piezoelectric film, oriented piezoelectric film, and liquid ejection head

A sodium niobate-barium titanate-based coating liquid composition comprising:

• (a) a sol-gel raw material containing:
• (i) at least one kind of niobium component selected from the group consisting of a niobium alkoxide, a hydrolysate of the niobium alkoxide, and a condensate of the hydrolysate of the niobium alkoxide;
• (ii) at least one kind of sodium component selected from the group consisting of a sodium alkoxide, a hydrolysate of the sodium alkoxide, and a condensate of the hydrolysate of the sodium alkoxide;
• (iii) at least one kind of titanium component selected from the group consisting of a titanium alkoxide, a hydrolysate of the titanium alkoxide, and a condensate of the hydrolysate of the titanium alkoxide;
• and
• (iv) at least one kind of barium component selected from the group consisting of a barium alkoxide, a hydrolysate of the barium alkoxide, and a condensate of the hydrolysate of the barium alkoxide;
• and
• (b) a compound including at least one member selected from the group consisting of a β-ketoester compound and a β-diketone compound represented by the following formula (1):
• where R1 represents an alkyl group having 1 or more to 6 or less carbon atoms.