Low-Temperature Rapid Synthesis and Superconductivity of Fe-Based Oxypnictide Superconductors

TL;DR

This paper presents a novel low-temperature, rapid synthesis method for Fe-based oxypnictide superconductors, achieving high critical temperatures with significantly reduced processing times and temperatures.

Contribution

The study introduces a new synthesis approach using ball-milling and low-temperature sintering to produce Fe-based superconductors efficiently.

Findings

Achieved Tc of 50.7 K with the new method.

Sintered at 1173 K for only 20 minutes.

Demonstrated rapid, low-temperature synthesis effectiveness.

Abstract

we were able to develop a novel method to synthesize Fe-based oxypnictide superconductors. By using LnAs and FeO as the starting materials and a ball-milling process prior to solid-state sintering, Tc as high as 50.7 K was obtained with the sample of Sm 0.85Nd0.15FeAsO0.85F0.15 prepared by sintering at temperatures as low as 1173 K for times as short as 20 min.