Method for manufacturing precursor, method for manufacturing superconducting wire, precursor, and superconducting wire

摘要

A method for manufacturing a superconducting wire includes the following steps. A laminate metal having a first metal layer and a Ni layer formed on the first metal layer is prepared. An intermediate layer (20) is formed on the Ni layer of the laminate metal. A superconducting layer (30) is formed on the intermediate layer (20). By subjecting the laminate metal to a heat treatment after at least either of the step of forming a intermediate layer (20) and the step of forming a superconducting layer (30), a nonmagnetic Ni alloy layer (12) is formed from the laminate metal.

主权项

1. A method for manufacturing a precursor comprising the steps of:
preparing a laminate metal having a first metal layer, and a non-alloyed nickel layer formed on said first metal layer; forming an intermediate layer on said nickel layer of said laminate metal; and forming a nonmagnetic nickel alloy layer from said laminate metal by subjecting said laminate metal to a heat treatment after said step of forming an intermediate layer, wherein in said nonmagnetic nickel alloy layer, the concentration of nickel monotonically reduces from an interface with said intermediate layer towards a surface opposite to said interface.