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. © 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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Yeoh, W. K., Zheng, R. K., Ringer, S. P., Li, W. X., Xu, X., Dou, S. X., … MacManus-Driscoll, J. L. (2011). Evaluation of carbon incorporation and strain of doped MgB2 superconductor by Raman spectroscopy. Scripta Materialia, 64(4), 323–326. https://doi.org/10.1016/j.scriptamat.2010.10.025
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