Patent ID: 6133092
Filing Date: 2000-10-17
Classification: C23C,H01L

Abstract:
A method of fabricating a ferroelectric device in an integrated circuit comprising the steps of:providing a substrate, and a precursor containing metal moieties in effective amounts for spontaneously forming a ferroelectric layered superlattice material upon drying and heating of said precursor, wherein said precursor contains metal moieties in amounts corresponding to the general formula A.sub.m-1 (S1.sub.y-x S2.sub.x)B.sub.m O.sub.3m+3, wherein S1 represents bismuth, S2 represents thallium, 2.ltoreq.y.ltoreq.2.4 and 0<x.ltoreq.y;applying said precursor to said substrate;drying said precursor to form a dried material on said substrate; andheating said dried material at a temperature of between 600.degree. C. and 725.degree. C. to yield a layered superlattice material containing said metal moieties on said substrate.