Patent ID: 8092870

Claim:
In a cyclic deposition process for the formation of ternary metal oxide films wherein a plurality of precursors are sequentially introduced into a deposition chamber, vaporized and deposited on a substrate under conditions for forming said ternary metal oxide film, the improvement which comprises: employing a first metal ketoiminate as a first precursor; employing an oxygen-containing source; employing a second metal ketoiminate as a second and different precursor; and, employing an oxygen-containing source, wherein one of the first or second ketoiminates is selected from the group represented by structure A: wherein M is a divalent Group 2 metal selected from the group consisting of calcium, magnesium, strontium, and barium; wherein R 1 is selected from the group consisting of alkyl, fluoroalkyl, cycloaliphatic, having from 1 to 10 carbon atoms, and aryl having from 6 to 12 carbon atoms; R 2 is selected from the group consisting of hydrogen, alkyl, alkoxy, cycloaliphatic, having from 1 to 10 carbon atoms, and aryl having 6 to 12 carbon atoms; R 3 is selected from the group consisting of alkyl, fluoroalkvl, cycloaliphatic, having from 1 to 10 carbon atoms, and aryl having 6 to 12 carbon atoms; R 4 is a C 2-3 linear or branched alkylene bridge with or without chiral carbon atom, thus making a five- or six-membered coordinating ring to the metal center; R 5-6 are individually selected from the group consisting of alkyl, fluoroalkyl, cycloaliphatic, having from 1 to 10 carbon atoms, and aryl having 6 to 12 carbon atoms, and they can be connected to form a ring containing carbon, oxygen, or nitrogen atoms; and the other of the first or second ketoiminate is selected from a group represented by structure B: wherein M is a tetra-valent metals selected from the group consisting of titanium, zirconium, and hafnium; wherein R 7 is selected from the group consisting of alkyl, fluoroalkyl, cycloaliphatic, having from 1 to 10 carbon atoms, and aryl having 6 to 12 carbon atoms; R 8-9 is selected from the group consisting of hydrogen, alkyl, alkoxv, cycloaliphatic, having from 1 to 10 carbon atoms, and aryl having 6 to 12 carbon atoms; R 10 is a C 2-3 linear or branched alkylene bridge with or without chiral carbon atom, thus making a five- or six-membered coordinating ring to the metal center.