27 August 2017 to 1 September 2017
RAI Congress Center, Amsterdam, The Netherlands
Europe/Amsterdam timezone

Upper critical and irreversibility magnetic fields and transport properties of bulk K-, Ni-, and Co-doped BaFe2As2 pnictides for different granularities and their prospects in magnet design

30 Aug 2017, 13:15
1h 45m
Posters Area

Posters Area

Poster Presentation of 1h45m F8 - Structural Materials for Magnets Wed-Af-Po3.10


Prof. Martin Nikolo (Saint Louis University)


A comprehensive study of upper critical (Hc2) and irreversibility magnetic fields (Hirr) in (Ba0.6K0.4)Fe2As2, Ba(Fe0.95Ni0.05)2As2, Ba(Fe0.94Ni0.06)2As2, Ba(Fe0.92Co0.08)2As2, and Ba(Fe0.92Co0.09)2As2 polycrystalline bulk pnictide superconductors for different average grain sizes was made in pulsed fields at the Los Alamos National Laboratory. The magnetic field-temperature (Hc2-T) phase diagrams with Hc2 as high as 65 T at 28 K for the K-doped samples and critical current density (Jc) measurements as high as 105 A/cm2 for the smallest, sub micron grain size samples were obtained. The high Hc2, Hirr, and Jc data shows the suitability of these materials for magnet design as their mechanical strength and random grain alignment show promise in the manufacturing process.

Submitters Country USA

Primary authors

Prof. Martin Nikolo (Saint Louis University) Dr John Singleton (National High Field Magnet Lab, Los Alamos ) Dr Jyanyi Jiang (National High Field Magnet Lab, FSU) Dr Jeremy Weiss (National High Field Magnet Lab, FSU) Prof. Eric Hellstrom (National High Field Lab, FSU)

Presentation Materials