Patent ID: 6528172
Filing Date: 2003-03-04
Classification: C01G,C01P,C23C,H01L

Abstract:
A ferroelectric thin film formed by applying a coating solution for use in forming Bi-based ferroelectric thin films containing Bi, metallic element A which is at least one metallic element selected from the group consisting of Bi, Pb, Ba, Sr, Ca, Na, K and rare earth elements and metallic element B which is at least one metallic element selected from the group consisting of Ti, Nb, Ta, W, Mo, Fe, Co and Cr, wherein it contains metal alkoxides of Bi, metallic element A as defined hereabove and metallic element B as defined hereabove respectively, and an organometallic compound obtained by hydrolyzing composite metal alkoxides, formed by any two or more of said metal alkoxides, with water alone or in combination with a catalyst, and contains Bi in a molar amount 1-1.1 times as great as the stoichiometric amount, onto an electrode on a substrate and then annealing the applied coating.