Tape-type superconductor with anisotropy of critical currents
AssigneeBruker HTS GmbH
InventorsAlexander Usoskin, Klaus Schlenga
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Abstract
A tape-type superconductor (1), comprising an elongated substrate (2), in particular a metal tape, and a continuous superconducting layer (3), in particular of a HTS type material, deposited on the substrate (2), is characterized in that Ic∥/Ic⊥≧1.5, with Ic∥ being the width density of critical current of the continuous superconducting layer (3) in parallel to the substrate (2) and in parallel to the elongated direction of the substrate (2), and with Ic⊥ being the width density of critical current of the continuous superconducting layer (3) in parallel to the substrate (2) and perpendicular to the elongated direction of the substrate (2). The tape-type superconductor has reduced ac losses.
Claims18
A tape-type superconductor, comprising:
- an elongated substrate or a metal tape;
- and
- a continuous superconducting layer or a continuous superconducting layer of an HTS type material, deposited on said substrate, wherein Ic∥/Ic⊥≧1.5, with Ic∥ being a width density of critical current of said continuous superconducting layer in parallel to said substrate and in parallel to an elongated direction of said substrate, and with Ic⊥ being a width density of critical current of said continuous superconducting layer in parallel to said substrate and perpendicular to said elongated direction of said substrate.
A method for using a superconductor, wherein the superconductor comprises a continuous superconducting layer or a layer of an HTS type material, deposited on a substrate, the method comprising the step of:
- operating the superconductor in an alternating magnetic field B having a component perpendicular to the substrate, wherein the continuous superconducting layer has an anisotropy of width densities of critical current with respect to two orthogonal directions in parallel with the substrate of 1.5 or larger, of 3 or larger, of 5 or larger or of 8 or larger.
A method for designing AC losses of an alternating magnetic field B in a superconductor, wherein the superconductor comprises a continuous superconducting layer or a layer of a HTS type material deposited on a substrate and the alternating magnetic field B has a component perpendicular to the substrate, the method comprising the step of:
- preparing the continuous superconducting layer with an anisotropy of width densities of critical current with respect to two orthogonal directions in parallel to the substrate such that a desired level of AC losses is achieved in the continuous superconducting layer.
Dependencies are inferred from the claim text.