SUPERCONDUCTING TAPE WIRE MATERIAL AND METHOD OF MANUFACTURING THE SAME

摘要

A method of manufacturing a superconducting tape wire material, wherein a reduction in a critical current in the superconducting tape wire material is suppressed by suppressing an increase in an effective AC loss.  To manufacture the superconducting tape wire material, filaments filled with superconducting material powder and having a flat elliptic or rectangular cross section are disposed in a pipe having a shape the sides of which in a pressing direction have a smaller length than adjacent sides, and then the pipe is pressed in the short-side direction to form the pipe in a tape shape.