Author/Authors :
Ren، نويسنده , , Z.A. and Che، نويسنده , , G.C. and Xiong، نويسنده , , H. and Li، نويسنده , , K.Q. and Yao، نويسنده , , Y.S. and Zheng، نويسنده , , D.N. and Ni، نويسنده , , Y.M. and Jia، نويسنده , , S.L. and Dong، نويسنده , , C. and Chen، نويسنده , , H. and Shen، نويسنده , , J.L. and Zhao، نويسنده , , Z.X.، نويسنده ,
Abstract :
In this paper, we demonstrate the coexistence of ferromagnetism and superconductivity in a new cuprate superconductor (Fe0.5Cu0.5)SrBaYCu2O7+δ synthesized under high pressure. This compound has a 1212-type structure, with tetragonal symmetry, lattice parameters a=3.844(3), c=11.53(2) Å and S.G.=P4/mmm. This ferromagnetic superconductor displays a magnetic transition temperature TM=150 K and a superconducting transition temperature TC=77 K. The occurrence of ferromagnetism in this superconductor can be explained by Dzyaloshinsky–Moriya (D–M)-type superexchange interaction.
