Evaluation of carbon incorporation and strain of doped MgB2 superconductor by Raman spectroscopy

Authors

Wai Kong Yeoh, The University Of Sydney
Rongkun Zheng, University of Sydney
S P. Ringer, University of Sydney
Wenxian Li, University of WollongongFollow
Xun Xu, University of WollongongFollow
S. X. Dou, University of WollongongFollow
S K. Chen, Universiti Putra Malaysia, Serdang, Selangor, Malaysia
JL MacManus-Driscoll, University of Cambridge, Cambridge, U.K

RIS ID

34751

Publication Details

Yeoh, W. Kong., Zheng, R., Ringer, S. P., Li, W., Xu, X., Dou, S. Xue., Chen, S. K. & MacManus-Driscoll, J. (2011). Evaluation of carbon incorporation and strain of doped MgB2 superconductor by Raman spectroscopy. Scripta Materialia, 64 (4), 323-326.

Abstract

Raman spectroscopy is employed to study both the strain and the carbon substitution level in SiC-doped MgB₂ bulk samples. Raman spectroscopy was demonstrated to be a better method to distinguish the individual influences of strain and carbon than standard X-ray diffraction. It is found that the lattice parameter correlation method for C content determination is invalid for highly strained samples. Our result also provides an alternative explanation for lattice variation in non-carbon-doped MgB₂, which is basically due to lattice strain.

Grant Number

ARC/DP0770205

Additional Grant Number

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