Growth and Pinning Properties of Superconducting Nanostructured $\hbox{FeSe}_{0.5}\hbox{Te}_{0.5}$ Thin Films on Amorphous Substrates

Abstract

FeSe0.5Te0.5 thin films were deposited by a pulsed laser deposition technique on amorphous substrates, e.g., for demonstration, glass substrates were used. Various interlayers were introduced to enhance the superconducting properties. Detailed microstructural characterizations including X-ray diffraction and cross-sectional transmission electron microscopy were conducted to verify the film quality. The results indicated the highly textured FeSe0.5Te0.5 film along (00l) direction on the glass substrate with good crystallinity. The transport properties were measured by a physical property measurement system. The superconducting critical transition temperature (Tc) is around 6 K. The critical current densities (Jc) were measured by the vibrating sample magnetometer in the physical property measurement system at 2 K under magnetic field up to 1 T. The growth of high-quality superconducting FeSe0.5Te0.5 thin film demonstrates a low cost method for processing future Fe-based superconductor-coated conductors.