No subject area
Effect of Carbon Substitution on the Superconducting Properties of MgB2 Doped With Multi-Walled Carbon Nanotubes and Nano Carbon (with W. K. Yeoh, J. H. Kim, X. Xu, and S. X. Dou), Faculty of Engineering - Papers (2007)
We have fabricated the multiwalled carbon nanotube (MWCNT) and nano-C doped MgB2 bulk and wire...
Effect of processing temperature on high field critical current density and upper critical field of nanocarbon doped MgB2 (with W. K. Yeoh, J. H. Kim, X. Xu, and S. X. Dou), Faculty of Engineering - Papers (2007)
Correlation of upper critical field (Hc2) and critical current density (Jc) with processing temperature of...
An alternative method for determination of the lock-in angle in twinned superconductors (with S. Keshavarzi, A. V. Pan, M. J. Qin, S. X. Dou, X. Yao, and P. Munroe), Faculty of Engineering - Papers (2006)
An alternative method for determining the lock-in angle phiL for pinning of the vortices on...
Effect of heating rates on superconducting properties of pure MgB2, carbon nanotube- and nano-SiC-doped in situ MgB2/Fe wires (with S. K. Chen, K. S. Tan, B. A. Glowacki, W. K. Yeoh, S. Soltanian, and S. X. Dou), Faculty of Engineering - Papers (2005)
The influence of heating rates and annealing temperatures on the transition temperatures (Tc) and critical...
Interaction between superconductor and ferromagnetic domains in iron sheath: Peak effect in MgB2/Fe wires (with W. K. Yeoh and L. M. Miller), Faculty of Engineering - Papers (2005)
Interaction between the superconductor and ferromagnet in MgB2/Fe wires results in either a plateau or...
Effect of carbon nanotube size on superconductivity properties of MgB/sub 2/ (with W. K. Yeoh, S. X. Dou, and P. Munroe), Faculty of Engineering - Papers (2005)
Experimental results are presented for the incorporation of carbon nanotube in polycrystalline MgB/sub 2/ superconductor...
Superconducting and Microstructural Properties of Two Types of MgB2 Films Prepared by Pulsed Laser Deposition (with Y. Zhao, M. Ionescu, M. Roussel, A. V. Pan, and S. X. Dou), Faculty of Engineering - Papers (2005)
Significant differences in superconducting and microstructural properties between two types of MgB2 films prepared by...
The relevance of the self-field for the 'peak effect' in the transport Jc(H) of iron-sheathed MgB2 wires (with S. Soltanian and W. K. Yeoh), Faculty of Engineering - Papers (2005)
Ferromagnetic sheath around a superconducting wire results in an unusual transport Jc(H). For the field...
Superconducting screening on different length scales in high-quality bulk MgB2 superconductor (with S. Soltanian, A. V. Pan, and X. L. Wang), Faculty of Engineering - Papers (2004)
High-quality bulk MgB2 exhibits a structure of voids and agglomeration of crystals on different length-scales....
Oxygen Vacancy Ordering and Magnetism in the Rare Earth Stabilised Perovskite Form of “SrCO3-d (with M. James, D. Cassidy, K. F. Wilson, and R. L. Withers), Faculty of Engineering - Papers (2004)
We have demonstrated that SrCoO3-d can be stabilised into phase pure perovskite forms by the...
Effect of sample size on magnetic Jc for MgB2 superconductor (with S. Soltanian, X. L. Wang, and S. X. Dou), Faculty of Engineering - Papers (2004)
A strong effect of sample size on magnetic Jc(H) was observed for bulk MgB2 when...
Uranium Doping and Thermal Neutron Irradiation Flux Pinning Effects in MgB2 (with T. M. Silver, M. Reinhard, P. Yao, S. Keshavarzi, P. Munroe, and S. X. Dou), Faculty of Engineering - Papers (2004)
The U/n method is a well-established means of improving flux pinning and critical current performance...
Effect of carbon nanotube doping on critical current density of MgB2 superconductor (with S. X. Dou, W. K. Yeoh, and M. Ionescu), Faculty of Engineering - Papers (2003)
The effect of doping MgB2 with carbon nanotubes on transition temperature, lattice parameters, critical current...
Effects of fission-fragment damage on vortex dimensionality in silver-sheathed Bi2Sr2Ca2Cu3Ox tapes (with D. G. Marinaro and S. X. Dou), Faculty of Engineering - Papers (2003)
We report on the vortex dimensionality of uranium-doped Ag/Bi2223 tapes, before and after irradiation to...
Superconductivity, critical current density, and flux pinning in MgB2–x(SiC)x/2 superconductor after SiC nanoparticle doping (with S. X. Dou, A. V. Pan, S. Zhou, M. Ionescu, X. L. Wang, H. K. Liu, and P. R. Munroe), Faculty of Engineering - Papers (2003)
We investigated the effect of SiC nanoparticle doping on the crystal lattice structure, critical temperature...
Intense vortex pinning enhanced by semicrystalline defect traps in self-aligned nanostructured MgB2 (with S. Li, T. White, K. Laursen, T. T. Tan, C. Q. Sun, Z. L. Dong, Y. Li, S. H. Zho, and S. X. Dou), Faculty of Engineering - Papers (2003)
In this work, we report the discovery of a vortex pinning source: semicrystalline defect wells...
A comparison of Ag and Ag-alloy sheathed Bi-2223 tapes (with H. K. Liu, Z. M. Zhang, R. Zeng, and M. Apperley), Faculty of Engineering - Papers (2003)
Ag and Ag-alloy sheathed Bi-2223 tapes were fabricated by a powder-in-tube technique with different configurations...
Effect of grain size and doping level of SiC on the superconductivity and critical current density in MgB/sub 2/ superconductor (with S. Soltanian, X. L. Wang, M. J. Qin, H. K. Liu, P. R. Munroe, and S. X. Dou), Faculty of Engineering - Papers (2003)
SiC doped MgB/sub 2/ polycrystalline samples were fabricated by in-situ reaction using different grain sizes...
Magnetic hysteresis and relaxation in Bi2212 single crystals doped with Fe and Pb (with K. K. Uprety, X. L. Wang, G. D. Gu, M. Ionescu, H. K. Liu, S. X. Dou, and E. H. Brandt), Faculty of Engineering - Papers (2003)
Magnetic hysteresis and magnetic relaxation measurements have been performed to study vortex pinning behaviors for...
Magnetic shielding in MgB2/Fe superconducting wires (with S. Soltanian, X. L. Wang, and S. X. Dou), Faculty of Engineering - Papers (2003)
Transport critical current (I/sub c/) was measured for MgB/sub 2//Fe round wires, with the magnetic...
Transport critical current density in Fe-sheathed nano-SiC doped MgB/sub 2/ wires (with S. X. Dou, S. Soltanian, X. L. Wang, M. J. Qin, S. H. Zhou, H. K. Liu, and P. G. Munroe), Faculty of Engineering - Papers (2003)
The nano-SiC doped MgB/sub 2//Fe wires were fabricated using a powder-in-tube method and an in-situ...
Enhancement of the critical current density and flux pinning of MgB2 superconductor by nanoparticle SiC doping (with S. X. Dou, S. Soltanian, X. L. Wang, S. H. Zhou, M. Ionescu, H. K. Liu, P. Munroe, and M. Tomsic), Faculty of Engineering - Papers (2002)
Doping of MgB2 by nano-SiC and its potential for the improvement of flux pinning were...
Intrinsic nanostructural domains: Possible origin of weaklinkless superconductivity in the quenched reaction product of Mg and amorphous B (with S. Li, O. Prabhakar, T. T. Tan, C. Q. Sun, X. L. Wang, S. Soltanian, and S. X. Dou), Faculty of Engineering - Papers (2002)
Smooth modulation structure of Mg–B alloy in the quenched reaction product of Mg and amorphous...
Order-disorder transition in Bi2.1Sr1.9CaCu2O8 + delta single crystals doped with Fe and Pb (with K. K. Uprety, X. L. Wang, M. Ionescu, H. K. Liu, S. X. Dou, and E. H. Brandt), Faculty of Engineering - Papers (2002)
The magnetic field Hdis(T) where an order-disorder transition of the vortex lattice in high-Tc superconductors...
Improvement of critical current in MgB2 superconducting wires by a ferromagnetic sheath (with X. L. Wang, S. Soltanian, and S. X. Dou), Faculty of Engineering - Papers (2002)
Transport critical current (Ic) was measured for Fe-sheathed MgB2 round wires. A critical current density...
Superconductivity and flux pinning in Y and heavily Pb codoped Bi-2212 single crystals (with X. L. Wang, H. K. Liu, S. X. Dou, D. Millikon, G. Heine, W. Lang, H. M. Luo, and S. Y. Ding), Faculty of Engineering - Papers (2001)
Studies of superconductivity and flux pinning were carried out on (Bi1.64Pb0.36)Sr2Ca1–xYxCu2O8 + y (x =...
Effect of uranium doping and thermal neutron irradiation on the flux-pinning of silver-clad Bi-Sr-Ca-Cu-O tapes (with D. Marinaro, S. X. Dou, J. Boldeman, R. Weinstein, and R. Sawh), Faculty of Engineering - Papers (2001)
Ag/Bi-2223 tapes doped with small quantities of 235UO 4 powder were prepared by the powder-in-tube...
Thermal activation and ac-field-induced discontinuous domain jumps in perovskite La0.7Ca0.3MnO3 (with X. L. Wang, H. K. Liu, and S. X. Dou), Faculty of Engineering - Papers (1998)
Low-field ac susceptibility was measured on bulk La0.7Ca0.3MnO3 prepared by a partial melting technique. Discontinuous...
Anomalous magnetization peak effect in spiral-grown Bi2Sr2CaCu2Oy crystals (with X. L. Wang, H. K. Liu, J. N. Li, and S. X. Dou), Faculty of Engineering - Papers (1997)
Magnetic hysteresis loops were measured on spiral-grown Bi2Sr2CaCu2Oy Bi-2212 crystals. An anomalous peak effect at...