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:
Apr. 10, 1990
Filed:
Aug. 02, 1988
Eckhardt Hoenig, Erlangen, DE;
Siemens Aktiengesellschaft, Berlin and Munich, DE;
Abstract
With the method a layer-like composition of an oxide-ceramic superconducting material with a high transition temperature and great current carrying capacity on the basis of a materials system containing metallic components and oxygen can be prepared. The method is to be improved in the direction that layers with great current-carrying capacity can be formed also on non-monocrystalline substrates. It is provided for this purpose that a multi-layer layer of the superconductive material is applied on a fine-crystalline substrate by first making successive layers of individual films with a respective film thickness under 10 nm, and then this multilayer structure is converted into the desired superconducting phase by means of supplying oxygen and at a temperature below 400.degree. C. For developing each individual film, the metallic components of the system are applied to the substrate that may be available, by means of a physical deposition process and while oxygen is being supplied, at a temperature below 400.degree. C., and by means of short thermal pulses a column structure is generated which comprises columns tightly packed with c-axes at least approximately perpendicular to the respective underlayer.