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"Improving Superconducting Performance of Fe(Se, Te) with in Situ Forme" by Jixing Liu, Botao Shao et al.

It is well known that the existence of interstitial Fe is a great obstacle to enhancing the superconducting properties of the Fe(Se, Te) system. In this work, a silver and oxygen codoping effect toward enhancement of the superconductivity and flux pinning in Fe(Se, Te) bulks is reported. The oxygen ions from SeO2 can induce the precipitation of interstitial Fe as Fe2O3, thus simultaneously optimizing the superconducting properties of Fe(Se, Te) and forming extra flux pinning centers, while the existence of Ag can enhance the intergrain connections of the polycrystalline material by improving the electron transport at grain boundaries. Compared with the undoped sample, the critical current density, the upper critical field, and the thermally activated flux flow activation energy are greatly enhanced by 4.7, 1.7, and 1.5 times, respectively. The novel synthesis technique and optimized properties of this work can pave the way for the development of high-performance Fe(Se, Te) superconduct ....

Chemical Doping , Critical Current Density , Be Se , Flux Pinning , Ron Based Superconductors ,

Graphene: The Future of Solar Cells

Solar energy has been at the forefront of nations' efforts to develop new technologies, and scientists are continuously looking for new methods to develop efficient energy-generating systems. ....

Usman Ahmeddec , Nano Lett , Usman Ahmed , Properties Of Graphene , Nobel Prize , Scotch Tape , Scotch Tape Method , Vapor Disposition , Graphene Based Solar , Chemical Vapour Deposition Technique , Graphene Synthesis , Efficiency Graphene Solar Cells , Chemical Doping , Solar Energy , Renewable Energy , Solar Power ,