DocumentCode :
1061021
Title :
Increased Superconductivity for CNT Doped 
Sintered in 5T Pulsed Magnetic Field
Author :
Li, Wen Xian ; Li, Ying ; Chen, Rong Hua ; Zeng, Rong ; Lu, Lin ; Zhang, Yun ; Tomsic, Michael ; Rindfleisch, Matthew ; Dou, Shi Xue
Author_Institution :
Inst. for Supercond. & Electron. Mater., Univ. of Wollongong, Wollongong, NSW, Australia
Volume :
19
Issue :
3
fYear :
2009
fDate :
6/1/2009 12:00:00 AM
Firstpage :
2752
Lastpage :
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, Tc, 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.
Keywords :
Raman spectra; carbon nanotubes; doping profiles; electron-phonon interactions; magnesium compounds; sintering; superconducting materials; superconducting transition temperature; MgB2:C; Raman scattering; Raman spectral fit analysis; boron plane; carbon atom; carbon nanotube; critical transition temperature; doped sample; electron-phonon coupling; magnetic flux density 5 T; pulsed magnetic field; sintering; superconductivity; ${hbox {MgB}}_{2}$
fLanguage :
English
Journal_Title :
Applied Superconductivity, IEEE Transactions on
Publisher :
ieee
ISSN :
1051-8223
Type :
jour
DOI :
10.1109/TASC.2009.2018077
Filename :
5067213
Link To Document :
