| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1818697 | Physica C: Superconductivity and its Applications | 2010 | 4 Pages |
Abstract
The 5d-transition metal, Ir has successfully been doped at Fe site and induced superconductivity in GdFeAsO at Tc = 18.9 K and ∼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 GdFe0.8Ir0.2AsO was extrapolated to around 24 T, much smaller than that of F-doped GdFeAsO owing to a relatively low Tc and small value of dHc2/dT.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Y.J. Cui, Y.L. Chen, C.H. Cheng, Y. Yang, J. Jiang, Y.Z. Wang, Y. Zhang, Y. Zhao,