Prospects for improving the intrinsic and extrinsic properties of magnesium diboride superconducting strands

EW Collings, MD Sumption, M Bhatia… - Superconductor …, 2008 - iopscience.iop.org
The magnetic and transport properties of MgB 2 films present performance goals yet to be
attained for powder-processed bulk samples and conductors. Carbon-doped films have …

Enhancement of Hc2 and Jc by carbon-based chemical doping

WK Yeoh, SX Dou - Physica C: Superconductivity, 2007 - Elsevier
In the past 5 years, various kinds of doping of MgB2, including single elements (metal and
non-metal), silicates, various carbon sources, and other compounds have been investigated …

Carbon substitution in single crystals: Structural and superconducting properties

SM Kazakov, R Puzniak, K Rogacki, AV Mironov… - Physical Review B …, 2005 - APS
The growth of carbon-substituted magnesium diboride Mg (B 1− x C x) 2 single crystals with
0⩽ x⩽ 0.15 is reported, and the structural, transport, and magnetization data are presented …

Significantly enhanced critical current densities in MgB2 tapes made by a scaleable nanocarbon addition route

Y Ma, X Zhang, G Nishijima, K Watanabe… - Applied Physics …, 2006 - pubs.aip.org
Nanocarbon-doped Fe-sheathed Mg B 2 tapes with different doping levels were prepared by
the in situ powder-in-tube method. Compared to the undoped tapes, J c for all the C-doped …

Effect of carbon nanotube doping on critical current density of MgB2 superconductor

SX Dou, WK Yeoh, J Horvat, M Ionescu - Applied physics letters, 2003 - pubs.aip.org
The effect of doping MgB2 with carbon nanotubes on transition temperature, lattice
parameters, critical current density and flux pinning was studied for MgB2xCx with x 0, 0.05 …

Carbon-substitution effect on the electronic properties of single crystals

T Masui, S Lee, S Tajima - Physical Review B—Condensed Matter and …, 2004 - APS
The electronic properties of the carbon-substituted MgB 2 single crystals are reported. The
carbon substitution drops T c below 2 K. In-plane resistivity shows a remarkable increase in …

Control of nano carbon substitution for enhancing the critical current density in MgB2

WK Yeoh, JH Kim, J Horvat, X Xu, MJ Qin… - Superconductor …, 2006 - iopscience.iop.org
The effects on transition critical temperature, lattice parameters, critical current density, and
flux pinning of doping MgB 2 with carbon nanoparticles, were studied for bulk, wire and tape …

Strong influence of boron precursor powder on the critical current density of MgB2

SK Chen, KA Yates, MG Blamire… - Superconductor …, 2005 - iopscience.iop.org
The influence of the nature of the boron precursor on the superconducting properties of
polycrystalline MgB 2 was studied. Critical current densities (J c) for MgB 2 made from high …

High transport critical current density and large Hc2 and Hirr in nanoscale SiC doped MgB2 wires sintered at low temperature

S Soltanian, XL Wang, J Horvat, SX Dou… - Superconductor …, 2005 - iopscience.iop.org
We report a systematic study on the effect of sintering temperature on the phase formation,
critical current density, upper critical field and irreversibility field of nanoscale SiC doped …

Sugar Coating of Boron Powder for Efficient Carbon Doping of MgB2 with Enhanced Current‐Carrying Performance

S Zhou, AV Pan, D Wexler, SX Dou - Advanced Materials, 2007 - Wiley Online Library
Two B or not two B? A liquid solution of carbohydrates, such as plain sugar, with boron
powder is developed for coating boron particles with a nanoscale carbon layer. This enables …