Fabrication of the iron-based superconducting wire using Fe(Se, Te)

TL;DR

This paper reports the fabrication of Fe(Se, Te) superconducting wire using a powder-in-tube method with a pure Fe sheath, achieving zero resistivity and suggesting improvements for higher critical current density.

Contribution

The study introduces a novel fabrication process utilizing a pure Fe tube as both sheath and raw material for Fe(Se, Te) superconducting wires.

Findings

Achieved zero resistivity in Fe(Se, Te) wire.

Successful fabrication using powder-in-tube method.

Potential for enhanced critical current density with pinning centers and multi-core design.

Abstract

We have fabricated the Fe(Se, Te) superconducting wire by a special process based on a powder-in-tube method. The pure Fe tube plays the role of not only the sheath but also the raw material for synthesizing the superconducting phases. We succeeded in observing zero resistivity current on the current-voltage measurements for the Fe(Se, Te) wire. Introduction of the pinning centers and fabricating a multi-core wire will enhance the critical current density for the next step.