Superconductivity and magnetism in Ir-doped GdFeAsO

作者：Cui Y J; Chen Y L; Cheng C H; Yang Y; Jiang J; Wang Y Z; Zhang Y; Zhao Y^*

来源：Physica C-Superconductivity and Its Applications, 2010, 470(20): 1077-1080.

DOI：10.1016/j.physc.2010.05.040

• Superconductivity
• Fe-based compounds
• GdFeAsO
• Ir doping

The 5d-transition metal, Ir has successfully been doped at Fe site and induced superconductivity in GdFeAsO at T(c) = 18.9 K and similar to 20 atom%. The Ir-doping shortened the c-axis length and stretched the a-axis one, which led to enhance the coupling between the FeAs- and SmO-layer, and to weaken the bonding between Fe and As atom. Paramagnetism was observed in all of the samples, which was resulted from the magnetic Gd ion as in the F-doped GdFeAsO. An upper critical field of GdFe(0.8)Ir(0.

• 出版日期2010-11-1
• 单位西南交通大学