The effects of sintering temperature on superconductivity in MgB2/Fe wires

Authors

Jung Ho Kim, University of WollongongFollow
S X. Dou, University of WollongongFollow
Jianli Wang, University of WollongongFollow
Dongqi Shi, University of WollongongFollow
Xun Xu, University of WollongongFollow
Md. Shahriar-Al Hossain, University of WollongongFollow
Wai Kong Yeoh, University of Wollongong
S Choi, National Institude for Materials Science
T Kiyoshi, National Institude for Materials Science

RIS ID

21195

Publication Details

Kim, J., Dou, S. X., Wang, J., Shi, D., Xu, X., Hossain, M., Yeoh, W., Choi, S. & Kiyoshi, T. (2007). The effects of sintering temperature on superconductivity in MgB2/Fe wires. Superconductor Science and Technology, 20 (5), 448-451.

Abstract

We studied the effects of sintering temperature on the phase transformation, lattice parameters, full width at half-maximum (FWHM), strain, critical temperature (Tc), critical current density (Jc) and resistivity (p) in MgB2/Fe wires. All samples were fabricated by the in situ powder-in-tube method (PIT) and sintered within a temperature range of 650-900 deg C. It was observed that wires sintered at low temperature, 650 deg C, resulted in higher Jc up to 12 T and lower Tc. The best transport Jc value reached 4200 A cm-2 at 4.2 K and 10 T. This is related to the grain boundary pinning due to small grain size. On the other hand, wires sintered at 900 deg C had a lower Jc in comination with a higher Tc.

Grant Number

ARC/DP0770205

Additional Grant Number

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