Physics – Condensed Matter – Superconductivity
Scientific paper
2011-03-23
Physics
Condensed Matter
Superconductivity
Scientific paper
We report on measurements of the superconducting properties of FeSe05Te05 thin films grown on lanthanum aluminate. The films have high transition temperatures (above 19 K) and sharp resistive transitions in fields up to 15 T. The temperature dependence of the upper critical field and the irreversibility lines are steep and anisotropic, as recently reported for single crystals. The critical current densities, assessed by magnetization measurements in a vector VSM, were found to be well above 10^9 Am-2 at low temperatures. In all samples, the critical current as a function of field orientation has a maximum, when the field is oriented parallel to the film surface. The maximum indicates the presence of correlated pinning centers. A minimum occurs in three films, when the field is applied perpendicular to the film plane. In the forth film, instead, a local maximum caused by c-axis correlated pinning centers was found at this orientation. The irradiation of two films with fast neutrons did not change the properties drastically, where a maximum enhancement of the critical current by a factor of two was found.
Bellingeri E.
Cimberle M. R.
Eisterer Michael
Ferdeghini Carlo
Pallecchi Ilaria
No associations
LandOfFree
Anisotropic critical currents in FeSe0.5Te0.5 films and the influence of neutron irradiation does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Anisotropic critical currents in FeSe0.5Te0.5 films and the influence of neutron irradiation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Anisotropic critical currents in FeSe0.5Te0.5 films and the influence of neutron irradiation will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-441488