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Effect Of Sucrose (C12h22o11) Doping On The Critical Current Density Of Mgb2, Y. Zhang, S. Zhou, Alexey Pan, S. X. Dou
Effect Of Sucrose (C12h22o11) Doping On The Critical Current Density Of Mgb2, Y. Zhang, S. Zhou, Alexey Pan, S. X. Dou
Shi Xue Dou
MgB2 bulk samples doped with sucrose were fabricated with the formula MgB2-x Cx ( x= 0, 0.08, 0.12, 0.2, 0.3, 0.5). Appropriate amounts of sucrose corresponding to the desired carbon content were added. The doping effect of sucrose was observed. It was found that samples doped with x = 02 sucrose have optimized current density at high magnetic field. The optimized sintering temperature for high current density was found to be 850 C. H 2 and H irr were both found to be improved due to the sucrose doping.
Effect Of Nano-Particle Doping On The Upper Critical Field And Flux Pinning In Mgb2, S X. Dou, Saeid Soltanian, W. K. Yeoh, Y. Zhang
Effect Of Nano-Particle Doping On The Upper Critical Field And Flux Pinning In Mgb2, S X. Dou, Saeid Soltanian, W. K. Yeoh, Y. Zhang
Saied Soltanian
The effect of nano particle doping on the critical current density of MgB2 is reviewed. Most nano-particle doping leads to improvement of Jc(H) performance while some shows a negative effect as with Cu and Ag. Nano-carbon containing dopants have two distinguishable contributions to the enhancement of Jc field performance: increase of upper critical field and improvement of flux pinning. Among all the dopants studied so far, nano SiC doping showed the most significant and reproducible enhancement in Jc(H). The nano SiC doping introduced many precipitates at a scale below 10 nm, which serve as strong pinning centers. Jc for the …
Effect Of Carbon Substitution On The Superconducting Properties Of Mgb2 Doped With Multi-Walled Carbon Nanotubes And Nano Carbon, W. K. Yeoh, J. Horvat, J. H. Kim, X. Xu, S. X. Dou
Effect Of Carbon Substitution On The Superconducting Properties Of Mgb2 Doped With Multi-Walled Carbon Nanotubes And Nano Carbon, W. K. Yeoh, J. Horvat, J. H. Kim, X. Xu, S. X. Dou
Josip Horvat
We have fabricated the multiwalled carbon nanotube (MWCNT) and nano-C doped MgB2 bulk and wire to investigate the effect of carbon substitution in theMgB2. Carbon substitution into boron site was confirmed by the shrinkage of the lattice parameter with the increasing of the doping level. It was found that the lattice distortion and optimum doping level are different in the CNT and nano-C samples. This can be explained by carbon substitution, which is a more direct substitution process with the nano-C precursor. With CNT doping, carbon substitution only occurred after break out of carbon atoms from CNT. Both dopants showed …