Increased superconductivity for CNT doped MgB2 sintered in 5T pulsed magnetic field

Authors

Wenxian Li, University of WollongongFollow
Ying Li, Shanghai University
Rong Hua Chen, Shanghai University
Rong Zeng, University of WollongongFollow
Lin Lu, University of WollongongFollow
Yun Zhang, University of WollongongFollow
Michael Tomsic, Hyper Tech Research, Inc., USA
Matthew Rindfleisch, Hyper Tech Research, Inc., USA
S. X. Dou, University of WollongongFollow

RIS ID

31504

Publication Details

Li, W. Xian., Li, Y., Chen, R. Hua., Zeng, R., Lu, L., Zhang, Y., Tomsic, M., Rindfleisch, M. & Dou, S. Xue. (2009). Increased superconductivity for CNT doped MgB2 sintered in 5T pulsed magnetic field. IEEE Transactions on Applied Superconductivity, 19 (3), 2752-2755.

Abstract

The superconductivity of carbon nanotube (CNT) doped MgB₂ sintered in pulsed magnetic field (PMF) was investigated with Raman scattering measurements and Raman spectral fit analysis. Although the carbon (C) substitution for the boron (B) is increased for the sample sintered in PMF, its superconductivity is advanced comparing with the sample sintered without PMF. The improved critical transition temperature, T_c, is attributed to the strengthening of the electron-phonon coupling (EPC) in MgB₂, as reflected by the broadened E _2g mode in the Raman spectra, because the carbon atoms are homogeneously distributed in the boron planes.

Grant Number

ARC/DP0770205

Additional Grant Number

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