Influence of antimony trioxide nanoparticle doping on superconductivity in MgB2 Bulk

Authors

Yun Zhang, University of WollongongFollow
S X. Dou, University of WollongongFollow

RIS ID

41455

Publication Details

Zhang, Y. and Dou, S. Xue. (2011). Influence of antimony trioxide nanoparticle doping on superconductivity in MgB₂ Bulk. Journal of Materials Research, 26 (21), 2701-2706.

Abstract

In this work, antimony trioxide (Sb₂O₃) has been doped into MgB₂ samples to act as an additive. The doping level varies from 2.5 to 15 wt%. The effects of Sb₂O₃ addition on the lattice parameters, critical temperature (T_c), critical current density (J_c), and upper critical field (H_c2) have been investigated in detail. It has been found that Sb₂O₃ doping results in a small depression in T_c. The J_c value is 2.4 × 10³ A·cm⁻² for the 2.5% Sb₂O₃-doped sample at 5 K and 8 T, which is more than two times higher than for the undoped sample. The significant J_c improvement at high fields is attributed to the H_c2 enhancement caused by the increased disorder.

Grant Number

ARC/DP0770205

Additional Grant Number

http://purl.org/au-research/grants/ARC/DP0770205