LAUSR

As a promising topological superconductor, Fe(Se0.5Te0.5) recently attracts interest from researchers, while Bi2Se3 has been considered one of the most important topological insulator materials. Therefore the Bi2Se3/FeSe0.5Te0.5 bulk composite could be interesting in demonstrating novel topological properties. We investigated crystalline, morphological, magnetic, and transport properties of Bi2Se3/FeSe0.5Te0.5 composite samples synthesized by the solid-state reaction method, and found that the elevated sintering temperature at the second step during the synthesis improves the crystallinity. All samples exhibit both superconductivity and ferromagnetism. Several indices of superconductivity, such as the transition temperature, change with increasing sintering temperature.