We performed an extensive characterization of Co-doped polycrystalline 122 iron pnictide samples, Ba(Fe1-xCox)2As2with x = 0.07, 0.09, 0.1, 0.12, by means of high-field dc magnetization and ac 1st and 3rd harmonic susceptibility response measurements. From M(H) loops through the Bean model formula both the magnetic field and T dependences of the Jcare derived. From the 3rd harmonic response of the ac susceptibility as a function of the dc magnetic field up to 10 T recorded at different temperatures, we determined the irreversibility line, using the onset criterion. From these analyses, 7% and 9% of Co-doped samples showed the best Jcperformances. © 2010 IEEE.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering
Celentano, G., De Marzi, C., Gaudio, S., Augieri, A., Galluzzi, V., Mancini, A., Rufoloni, A., Vannozzi, A., Della Corte, A., Gambardella, U., Saggese, A., Jiang, J. J., Weiss, J., & Helistrom, E. (2011). The effect of doping on the magnetic properties in Ba(Fe. IEEE Transactions on Applied Superconductivity, 21(3 PART 3), 2874 - 2877. . https://doi.org/10.1109/TASC.2010.2088356