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USA As Represented by Secretary of the Navy

Raphael Kaplan

David Kurt Gaskill

Nicholas Bottka

Richard L Henry

Alan D Berry

Edward J Cukauskas

Ronald T Holm

A CVD process for forming a layer or layers of superconducting materials on a semiconductor substrate in which volatile organometallic compounds of bismuth, strontium, calcium and copper are heated in the presence of a carrier gas in a first chamber free of hydrolyzing agents. Under conditions free of hydrolyzing agents, the carrier gas transports a predetermined quantity of the volatile organometallic compounds of the bismuth, strontium, calcium and copper to a deposition chamber. The compounds are decomposed and deposit mixed oxides on the substrate. Subsequent to deposition of the mixed oxides of the desired elements the layer is sintered in an oxygen-rich atmosphere, and formed into a superconducting film by subsequent slow cooling still in an oxygen-rich atmosphere.

Formation of superconducting Bi-Sr-Ca-Cu-O films by organometallic

A method for forming a single crystal epitaxial film of a selected metal on the surface of a substrate. The method includes the steps of positioning the substrate in an ultra high vacuum environment and exposing the substrate surface to a metalorganic vapor including ions of the selected metal while maintaining an ultra high vacuum environment.

Method for the deposition of high-quality crystal epitaxial films of iron

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Arlington, VA, United States of America

Raphael Kaplan