Oxide superconductor and method of fabricating the same.

摘要

According to various embodiments of the present invention, there is provided: a superconductor has a sectional structure composed of a superconductor phase, metal phase and an insulating phase, wherein the volume of the insulating phase is expanded in a heat-treatment process by the phase-conversion of crystals of the insulating phase; thus, it is possible to achieve the densifying by heat-treatment after coil winding, and to obtain a superconductor less in alternating current loss. <IMAGE>