High critical current density of bulk superconductor doped with Ti and sintered at ambient pressure

Y Zhao, Y Feng, CH Cheng, L Zhou, Y Wu… - Applied Physics …, 2001 - pubs.aip.org
Ti-doped MgB 2 superconductors with different doping levels were prepared by solid-state
reaction at ambient pressure. The density, diamagnetic signal, and J c of the samples …

Improvement of critical current density in superconductors by Zr doping at ambient pressure

Y Feng, Y Zhao, YP Sun, FC Liu, BQ Fu, L Zhou… - Applied Physics …, 2001 - pubs.aip.org
We present the superconducting properties and phase compositions of Mg 1− x Zr x B 2 bulk
samples fabricated by a solid-state reaction at ambient pressure. It is found that a small …

Doping effect of Zr and Ti on the critical current density of MgB2 bulk superconductors prepared under ambient pressure

Y Zhao, Y Feng, DX Huang, T Machi, CH Cheng… - Physica C …, 2002 - Elsevier
The doping effect of Ti and Zr on the superconducting properties and the microstructure of
sintered MgB2 bulk materials has been studied. The transition metal is found to work as a …

Improved critical current properties observed in MgB2 bulks synthesized by low-temperature solid-state reaction

A Yamamoto, J Shimoyama, S Ueda… - Superconductor …, 2004 - iopscience.iop.org
MgB 2 bulks were synthesized by the solid-state reaction of Mg and B at 600 C and their
superconducting properties were compared with samples heated at 850 C. The samples …

Significant enhancement of flux pinning in MgB2 superconductor through nano-Si addition

XL Wang, SH Zhou, MJ Qin, PR Munroe… - Physica C …, 2003 - Elsevier
Polycrystalline MgB2 samples with 10 wt.% silicon powder addition were prepared by an in
situ reaction process. Two different Si powders, one with coarse (44 μm) and the other with …

Enhancement of the critical current density and flux pinning of superconductor by nanoparticle SiC doping

SX Dou, S Soltanian, J Horvat, XL Wang… - Applied Physics …, 2002 - pubs.aip.org
Doping of MgB 2 by nano-SiC and its potential for the improvement of flux pinning were
studied for MgB 2− x (SiC) x/2 with x= 0, 0.2, and 0.3 and for 10 wt% nano-SiC-doped MgB 2 …

Optimization of sintering conditions in bulk MgB2 material for improvement of critical current density

M Muralidhar, K Nozaki, H Kobayashi, XL Zeng… - Journal of Alloys and …, 2015 - Elsevier
The present investigation focuses on methods to further improve the J c values of disk-
shaped bulk MgB 2 superconductors by optimizing the sintering conditions. We prepared …

High critical current density and improved flux pinning in bulk MgB2 synthesized by Ag addition

C Shekhar, R Giri, RS Tiwari, ON Srivastava… - Journal of applied …, 2007 - pubs.aip.org
In the present investigation, we report a systematic study of Ag admixing in Mg B 2 prepared
by solid-state reaction at ambient pressure. All the samples in the present investigation have …

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 …

Effects of B4C doping on critical current properties of MgB2 superconductor

A Yamamoto, J Shimoyama, S Ueda… - Superconductor …, 2005 - iopscience.iop.org
The relationships between microstructures, crystallinity and critical current properties for B 4
C doped MgB 2 bulks, MgB 2− 5x (B 4 C) x with x= 0, 0.04, 0.1, 0.2 and 0.4, were …