English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We report the synthesis and characterization of antimony doped oxypnictidesuperconductor, LaO0.8F0.2FeAs1-xSbx (x = 0.05 and 0.10). The parent compoundLaOFeAs with fluorine doping exhibits superconductivity at maximum transitiontemperature ~ 28.5 K [11]. Here we partially substitute As by Sb(LaO0.8F0.2FeAs1-xSbx) and observe enhancement of the transition temperature to30.1 K. This is the only instance so far where Tc increases with doping in theconducting layer (FeAs) and this leads to the highest transition temperature inany La-based oxypnictide. XRD and EDAX measurements confirm phase purity of thesamples and the presence of Sb. The magneto-resistance measurements show thatthe value of upper critical field Hc2(0) to be about 73 T corresponding to acoherence length of 22 angstrom. The Seebeck coefficient measurements indicateelectron transport with strong contribution from electron-electron correlation.These results provide interesting insight to the origin of superconductivity inthese novel series of compounds.

Enhancement in superconducting transition temperature and upper critical field of LaO0.8F0.2FeAs with antimony doping