Abstract:
A structure including a thin film of a conductive alkaline earth metal oxide selected from the group consisting of strontium ruthenium trioxide, calcium ruthenium trioxide, barium ruthenium trioxide, lanthanum-strontium cobalt oxide or mixed alkaline earth ruthenium trioxides thereof upon a thin film of a noble metal such as platinum is provided.
Abstract:
An article of manufacture including a substrate, a patterned interlayer of a material selected from the group consisting of magnesium oxide, barium-titanium oxide or barium-zirconium oxide, the patterned interlayer material overcoated with a secondary interlayer material of yttria-stabilized zirconia or magnesium-aluminum oxide, upon the surface of the substrate whereby an intermediate article with an exposed surface of both the overcoated patterned interlayer and the substrate is formed, a coating of a buffer layer selected from the group consisting of cerium oxide, yttrium oxide, curium oxide, dysprosium oxide, erbium oxide, europium oxide, iron oxide, gadolinium oxide, holmium oxide, indium oxide, lanthanum oxide, manganese oxide, lutetium oxide, neodymium oxide, praseodymium oxide, plutonium oxide, samarium oxide, terbium oxide, thallium oxide, thulium oxide, yttrium oxide and ytterbium oxide over the entire exposed surface of the intermediate article, and, a ceramic superconFIELD OF THE INVENTIONThe present invention relates to the field of superconducting articles having two distinct regions of superconductive material with differing in-plane orientations whereby the conductivity across the boundary between the two regions can be tailored. This invention is the result of a contract with the Department of Energy (Contract No. W-7405-ENG-36).
Abstract:
Vapor deposition of a thin film is accomplished by employing a pulsed laser to irradiate at least a region of a homogeneous stoichiometric complex material pellet with sufficient energy density to accomplish congruent evaporation of constituents of the material. The energy density is further at least sufficient to cause at least a predetermined portion, a central forward lobe, of the evaporant to have approximately the same stoichiometry as the irradiated material. A substrate is positioned to allow deposit thereon of that lobe portion of the evaporant as a thin film. Also shown are apparatus for masking out predetermined portions of the evaporant outside said lobe and passing at least a part of the lobe evaporant through a mask aperture, use of apparatus for causing relative movement of the substrate and the mask to achieve film deposition over a substrate area substantially larger than the area of the aperture, apparatus for charge level detection in the evaporant stream to detct lobe drift, and apparatus for tilting the pellet to compensate for drift of the forward lobe away from the mask aperture.
Abstract:
A ceramic superconductor comprising a metal oxide substrate, a ceramic high temperature superconductive material, and a intermediate layer of a material having a cubic crystal structure, said layer situated between the substrate and the superconductive material is provided, and a structure for supporting a ceramic superconducting material is provided, said structure comprising a metal oxide substrate, and a layer situated over the surface of the substrate to substantially inhibit interdiffusion between the substrate and a ceramic superconducting material deposited upon said structure.
Abstract:
A substrate-free, free-standing epitaxially oriented superconductive film including a layer of a template material and a layer of a ceramic superconducting material is provided together with a method of making such a substrate-free ceramic superconductive film by coating an etchable material with a template layer, coating the template layer with a layer of a ceramic superconductive material, coating the layer of ceramic superconductive material with a protective material, removing the etchable material by an appropriate means so that the etchable material is separated from a composite structure including the template layThis invention is the result of a contract with the Department of Energy (Contract No. W-7405-ENG-36).