Chinese scientists have discovered a new iron-based superconducting material, lithium-iron-iron-oxygen-iron-selenium compound, whose superconducting transition temperature is as high as 40K (minus 233.15 degrees Celsius). After determining the crystal structure of the new material, scientists discovered that the superconductivity Sex and anti-ferromagnetic coexistence. Experts pointed out that this is the first time in the world that hydrothermal methods have been used to discover new selenium-based high-temperature superconducting materials. This is a major advance in iron-based superconducting research and provides new research ideas for the exploration of new superconductors in related systems. At the same time, the new superconductors have the advantages of high superconducting transition temperature and air stability, which provide the possibility for further experimental research and provide an ideal material system for exploring the intrinsic physical mechanism of iron-based HTS. The study was completed by Professor Chen Xianhui of the Hefei National Laboratory for Microscale Physical Sciences at the China University of Science and Technology. The relevant results were published online on December 15th in the international magazine "Nature-Materials". Beijing, December 21st (Zhao Yongxin, Yang Baoguo) Diamond Wire For Sapphire Cutting
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