Method for producing substrates for superconducting layers

摘要

There is provided a method for producing a substrate (600) suitable for supporting an elongated superconducting element, wherein, e.g., a deformation process is utilized in order to form disruptive strips in a layered solid element, and where etching is used to form undercut volumes (330, 332) between an upper layer (316) and a lower layer (303) of the layered solid element. Such relatively simple steps enable providing a substrate which may be turned into a superconducting structure, such as a superconducting tape, having reduced AC losses, since the undercut volumes (330, 332) may be useful for separating layers of material. In a further embodiment, there is placed a superconducting layer on top of the upper layer (316) and/or lower layer (303), so as to provide a superconducting structure with reduced AC losses.

主权项

1. A method for producing a substrate suitable for supporting an elongated superconducting element, the method comprising the steps of:
providing a layered solid element, the layered solid element comprising
a lower layer, andan upper layer, wherein the upper layer is placed adjacent to the lower layer and at least partially covers the lower layer, forming a plurality of disruptive strips in the upper layer thereby forming a plurality of exposed areas of the lower layer, where each exposed area is formed along a disruptive strip, etching the exposed areas so as to form undercut volumes between the upper layer and the lower layer, where each undercut volume is formed along a disruptive strip, wherein an etchant is employed for which an etch rate for the lower layer is higher than an etch rate for the upper layer.