Abstract: A superconducting fault current-limiter is provided, including a superconducting element configured to resistively or inductively limit a fault current, and one or more variable-impedance shunts electrically coupled in parallel with the superconducting element. The variable-impedance shunt(s) is configured to present a first impedance during a superconducting state of the superconducting element and a second impedance during a normal resistive state of the superconducting element. The superconducting element transitions from the superconducting state to the normal resistive state responsive to the fault current, and responsive thereto, the variable-impedance shunt(s) transitions from the first to the second impedance.

Abstract: A superconducting fault current-limiter is provided, including a superconducting element configured to resistively or inductively limit a fault current, and one or more variable-impedance shunts electrically coupled in parallel with the superconducting element. The variable-impedance shunt(s) is configured to present a first impedance during a superconducting state of the superconducting element and a second impedance during a normal resistive state of the superconducting element. The superconducting element transitions from the superconducting state to the normal resistive state responsive to the fault current, and responsive thereto, the variable-impedance shunt(s) transitions from the first to the second impedance.

Abstract: A superconducting article is provided that includes a substrate, an anti-epitaxial film over the substrate, a buffer film having biaxial crystal texture over the anti-epitaxial film, and a superconductor layer over the second buffer film. Also provided is a superconducting article as a tape, in a power cable, and a power transformer.

Abstract: Methods for depositing, at a very high deposition rate, a biaxially-textured film on a continuously moving metal tape substrate are disclosed. These methods comprise: depositing a film on the substrate with a deposition flux having an oblique incident angle of about 5° to about 80° from the substrate normal, while simultaneously bombarding the deposited film using an ion beam at an ion beam incident angle arranged along either a best ion texture direction of the film or along a second best ion texture direction of the film, thereby forming the biaxially-textured film, wherein a deposition flux incident plane is arranged parallel to a direction along which the biaxially-textured film has a fast in-plane growth rate. Superconducting articles comprising a substrate, a biaxially-textured film deposited on said substrate by said methods above; and a superconducting layer disposed on the biaxially-textured film are also disclosed.

Abstract: A superconducting article and a method of making a superconducting article is described. The method of forming a superconducting article includes providing a substrate, forming a buffer layer to overlie the substrate, the buffer layer including a first buffer film deposited in the presence of an ion beam assist source and having a uniaxial crystal texture. The method further includes forming a superconducting layer to overlie the buffer layer.

Abstract: A method of forming a superconductive device is provided, including providing a substrate having a dimension ratio of not less than about 102, depositing a buffer film to overlie the substrate by ion beam assisted deposition utilizing and ion beam, monitoring spatial ion beam density of the ion beam over a target area, and depositing a superconductor layer to overlie the buffer film. Monitoring may be carried out by utilizing an ion detector having an acceptance angle of not less than 10°.

Abstract: A superconductor component is disclosed that includes a metal alloy substrate having a dimension ratio of not less than 10, a compliance layer overlying the substrate, the compliance layer being comprised of an amorphous or nanocrystalline ceramic material having an average grain size not greater than 50 nm, and an IBAD buffer layer overlying the compliance layer. The IBAD buffer layer has a biaxial crystal texture and comprises a material from the group consisting of fluorite type materials, pyrochlore type materials, rare earth C-type materials, non-cubic materials, and layer structured materials.

Abstract: A superconducting article is provided that includes a substrate, an anti-epitaxial film over the substrate, a buffer film having biaxial crystal texture over the anti-epitaxial film, and a superconductor layer over the second buffer film. Also provided is a superconducting article as a tape, in a power cable, and a power transformer.

Abstract: A superconducting article and a method of making a superconducting article is described. The method of forming a superconducting article includes providing a substrate, forming a buffer layer to overlie the substrate, the buffer layer including a first buffer film deposited in the presence of an ion beam assist source and having a uniaxial crystal texture. The method further includes forming a superconducting layer to overlie the buffer layer.

Abstract: Methods for biaxially-texturing a surface-region of an amorphous material are disclosed, comprising depositing an amorphous material onto a substrate, and supplying active oxygen near the substrate during ion beam bombardment of the amorphous material to create an amorphous material having a biaxially textured surface, wherein the ion beam bombardment occurs at a predetermined oblique incident angle. Methods for producing high-temperature coated superconductors are also disclosed, comprising depositing an amorphous buffer film onto a metal alloy substrate, bombarding a surface-region of the amorphous buffer film with an ion beam at an oblique incident angle while supplying active oxygen to the surface-region of the amorphous buffer film in order to create a biaxially textured surface-region thereon, and growing a superconducting film on the biaxially textured surface-region of the amorphous buffer film to create a high-temperature coated superconductor.

Abstract: A method of forming a superconductive device is provided, including providing a substrate having a dimension ratio of not less than about 102, depositing a buffer film to overlie the substrate by ion beam assisted deposition utilizing and ion beam, monitoring spatial ion beam density of the ion beam over a target area, and depositing a superconductor layer to overlie the buffer film. Monitoring may be carried out by utilizing an ion detector having an acceptance angle of not less than 10°.

Abstract: Methods for depositing, at a very high deposition rate, a biaxially-textured film on a continuously moving metal tape substrate are disclosed. These methods comprise: depositing a film on the substrate with a deposition flux having an oblique incident angle of about 5° to about 80° from the substrate normal, while simultaneously bombarding the deposited film using an ion beam at an ion beam incident angle arranged along either a best ion texture direction of the film or along a second best ion texture direction of the film, thereby forming the biaxially-textured film, wherein a deposition flux incident plane is arranged parallel to a direction along which the biaxially-textured film has a fast in-plane growth rate. Superconducting articles comprising a substrate, a biaxially-textured film deposited on said substrate by said methods above; and a superconducting layer disposed on the biaxially-textured film are also disclosed.

Abstract: Methods for biaxially-texturing a surface-region of an amorphous material are disclosed, comprising depositing an amorphous material onto a substrate, and supplying active oxygen near the substrate during ion beam bombardment of the amorphous material to create an amorphous material having a biaxially textured surface, wherein the ion beam bombardment occurs at a predetermined oblique incident angle. Methods for producing high-temperature coated superconductors are also disclosed, comprising depositing an amorphous buffer film onto a metal alloy substrate, bombarding a surface-region of the amorphous buffer film with an ion beam at an oblique incident angle while supplying active oxygen to the surface-region of the amorphous buffer film in order to create a biaxially textured surface-region thereon, and growing a superconducting film on the biaxially textured surface-region of the amorphous buffer film to create a high-temperature coated superconductor.