The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 12, 2004
Filed:
Jan. 10, 2003
Melanie W. Cole, Churchville, MD (US);
The United States of America as represented by the Secretary of the Army, Washington, DC (US);
Abstract
A method of deposition of a microwave frequency paraelectric BST-based thin film on a SiC substrate provides a resulting thin film-substrate structure which has no interfacial phases or element/chemical interdiffusion. For physical vapor deposition of the thin film, at least one of (i) thermally stable, refractory semiconductor substrate material is heat-treated during film deposition and (ii) the film-substrate structure is post-deposition heat treated, e.g., annealed, to achieve high quality film crystallinity with a fully developed film microstructure having desired microwave dielectric and insulating properties. For chemical solution deposition, the thin film is deposited onto a thermally stable, refractory semiconductor substrate material and is post-deposition heat treated to achieve a high quality film with a fully developed film microstructure having desired microwave dielectric and insulating properties.