Patent ID: 9502636
Filing Date: 2016-11-22
CPC Classification: B05D,C01G,C01P,C04B,C23C,H01B,H01G,H01L

Claim Text:
1. A composition for the formation of a ferroelectric thin film which is used in the formation of a ferroelectric thin film of one material selected from the group consisting of PLZT, PZT, and PT, wherein the composition is a liquid composition for the formation of a thin film of a composite metal oxide formed of a mixture of a composite metal oxide A represented by the general formula (1): (Pb x La y )(Zr z Ti (1-z) )O 3 [In the formula (1), 0.9<x<1.3, 0≦y<0.1, and 0≦z<0.9] with a carboxylic acid B which is represented by the general formula (2): C n H 2n+1 COOH (wherein 3≦n≦7) and capable of taking the structure of the following general Chemical Formula (3) upon coordination with the metal element of the composite metal oxide A, the composition comprising an organometallic compound solution wherein a raw material of the composite metal oxide A, and the carboxylic acid B are dissolved in an organic solvent in such a manner that the molar ratio B/A of the carboxylic acid B to the composite metal oxide A is in the range of 0<B/A<0.2, wherein a pseudo-carboxylate in which the carboxylic acid B is coordinated to the metal element of the composite metal oxide A takes a structure of a 6-membered ring by an action of a hydrogen bond [in the Chemical Formula (3), within the range satisfying “n” of the general formula (2): C