A new FeSe-based superconductor （C2H8N2）x FeSe with ethylenediamine intercalated into FeSe was suc- cessfully synthesized by the solvothermal method, which is the first superconducting instance by metal-free organic...A new FeSe-based superconductor （C2H8N2）x FeSe with ethylenediamine intercalated into FeSe was suc- cessfully synthesized by the solvothermal method, which is the first superconducting instance by metal-free organic molecule intercalation. Elemental analysis and TG-IR-GC/MS data re- veal that the ethylenediamine molecules in the interlayer space are separate and intact. The X-ray diffraction （XRD） pattern indicates that the intercalation compound is an orthorhombic lattice rather than a tetragonal lattice applying to almost all the previous FeSe-based superconductors at room tempera- ture. The magnetism measurements display a sharp super- conducting transition at -10 K which is assigned to （C2H8N2）xFeSe, and a tiny drop in susceptibility at -30 K.展开更多
基金supported by the National Natural Science Foundation of China (21671182)
文摘A new FeSe-based superconductor （C2H8N2）x FeSe with ethylenediamine intercalated into FeSe was suc- cessfully synthesized by the solvothermal method, which is the first superconducting instance by metal-free organic molecule intercalation. Elemental analysis and TG-IR-GC/MS data re- veal that the ethylenediamine molecules in the interlayer space are separate and intact. The X-ray diffraction （XRD） pattern indicates that the intercalation compound is an orthorhombic lattice rather than a tetragonal lattice applying to almost all the previous FeSe-based superconductors at room tempera- ture. The magnetism measurements display a sharp super- conducting transition at -10 K which is assigned to （C2H8N2）xFeSe, and a tiny drop in susceptibility at -30 K.
