Patent ID: 6410346
Filing Date: 2002-06-25
Classification: C23C,H01L

Abstract:
A method for forming a ferroelastic lead germanium oxide (PGO) film on an integrated circuit (IC) wafer comprising the steps of:a) mixing [Pb(thd)2] and [Ge(ETO)4] to form a PGO mixture having a molar ratio in the range of approximately 2:1 to 4:1; b) dissolving the mixture of Step a) with a solvent of tetrahydrofuran, isopropanol, and tetraglyme to form a precursor solution; c) heating the solution formed in Step b) to create a precursor gas; and d) decomposing the precursor gas formed in Step c) on the IC wafer to form a PGO thin film, including a first phase of Pb3GeO5, whereby the PGO film having ferroelastic properties is formed.