Patent ID: 6045626
Filing Date: 2000-04-04
Classification: H01L

Abstract:
A substrate structure for electronic devices, comprising a substrate having a surface, at least the substrate surface formed of single crystal silicon, a buffer layer on the substrate surface, and a surface layer on the buffer layer,said buffer layer being constructed by an oxide buffer layer and/or a nitride buffer layer,said oxide buffer layer including an R--Zr family oxide thin film which is an epitaxial film comprising an oxide of scandium, yttrium or a rare earth element and/or zirconium oxide, an AMnO.sub.3 base thin film which is an epitaxial film comprising A, manganese and oxygen wherein A is scandium, yttrium or a rare earth element and having a crystal structure of hexagonal YMnO.sub.3 type, an AlO.sub.x base thin film which is an epitaxial film comprising aluminum and oxygen, or a combination of said R--Zr family oxide thin film with said AMnO.sub.3 base thin film and/or said AlO.sub.x base thin film,said nitride buffer layer including a NaCl type nitride thin film which is an epitaxial film comprising at least one of titanium nitride, niobium nitride, tantalum nitride and zirconium nitride,said surface layer including an oxide epitaxial film having a wurtzite type crystal structure and/or a nitride epitaxial film having a wurtzite type crystal structure.