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

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.