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Multilayer thin film, substrate for electronic device, electronic device, and preparation of multilayer oxide thin film

Patent 5801105 Issued on September 1, 1998. Estimated Expiration Date: Icon_subject June 14, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

Method for making high-current, ohmic contacts between semiconductors and oxide superconductors
Patent #: 5084437
Issued on: 01/28/1992
Inventor: Talvacchio

Light beam deflector for deflecting light from optical waveguide by inclined grating Patent #: 5185829
Issued on: 02/09/1993
Inventor: Yamada, et al.

Inventors

Assignee

Application

No. 663741 filed on 06/14/1996

US Classes:

438/785, Insulative material is compound of refractory group metal (i.e., titanium (Ti), zirconium (Zr), hafnium (Hf), vanadium (V), niobium (Nb), tantalum (Ta), chromium (Cr), molybdenum (Mo), tungsten (W), or alloy thereof)257/E21.009, Dielectric having perovskite structure (EPO)438/2, HAVING SUPERCONDUCTIVE COMPONENT438/3, HAVING MAGNETIC OR FERROELECTRIC COMPONENT438/648Having refractory group metal (i.e., titanium (Ti), zirconium (Zr), hafnium (Hf), vanadium (V), niobium (Nb), tantalum (Ta), chromium (Cr), molybdenum (Mo), tungsten (W), or alloy thereof)

Examiners

Primary: Tsai, Jey

Attorney, Agent or Firm

International Classes

H01L 021/31
H01L 021/469

Foreign Application Priority Data

1995-08-04 JP

Abstract

A multilayer thin film of the invention has an oxide thin film formed on a semiconductor single crystal substrate, and the oxide thin film includes at least one epitaxial thin film composed mainly of zirconium oxide or zirconium oxide stabilized with a rare earth metal element (inclusive of scandium and yttrium). Included is an oriented thin film formed on the oxide thin film from a dielectric material of perovskite or tungsten bronze type with its c-plane unidirectionally oriented parallel to the substrate surface. Consequently, there are provided a perovskite oxide thin film of (001) orientation, a substrate for an electronic device comprising the thin film, and a method for preparing the thin film.

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