Patent ID: 6929695

Claim:
A method of preparing a single crystal oxide thin film, comprising the steps of; depositing a first oxide layer serving as a seed layer on a substrate, said seed layer having the same composition as that of an oxide thin film to be subsequently deposited onto said seed layer; depositing a second layer on said seed layer, said second layer comprising a substance capable of being melted and liquidized by heat from said substrate and dissolving the oxide to be subsequently deposited onto the seed layer; heating said substrate to melt the second layer to form a liquid layer; and depositing an oxide on the seed layer through the liquid layer by use of a vapor-phase epitaxy method to form the single crystal oxide thin film, wherein the oxygen partial pressure on the liquid layer is set in the range of 1.0 to 760 Torr during said step of forming the single crystal oxide thin film by use of a vapor-phase epitaxy method.