The Effect of Cu Addition on the Phase Formation and Critical Current Density in the Sugar Doped MgB2 Superconductor

2012 ◽  
Vol 25 (6) ◽  
pp. 1683-1688 ◽  
Author(s):  
Zongqing Ma ◽  
Yongchang Liu ◽  
Qi Cai
Keyword(s):  
Critical Current Density ◽  
Critical Current ◽  
Phase Formation ◽  
Current Density ◽  
Mgb2 Superconductor ◽  
Doped Mgb2

Enhancement of critical current density for nano (n)-ZnO doped MgB2 superconductor

2013 ◽  
Vol 495 ◽  
pp. 208-212 ◽  
Author(s):  
Intikhab A. Ansari ◽  
M. Shahabuddin ◽  
Nasser S. Alzayed ◽  
Khalil A. Ziq ◽  
A.F. Salem ◽  
...  
Keyword(s):  
Critical Current Density ◽  
Critical Current ◽  
Current Density ◽  
Mgb2 Superconductor ◽  
Doped Mgb2

Enhancement of flux pinning and high critical current density in graphite doped MgB2 superconductor

2007 ◽  
Vol 102 (9) ◽  
pp. 093910 ◽  
Author(s):  
Chandra Shekhar ◽  
Rajiv Giri ◽  
R. S. Tiwari ◽  
O. N. Srivastava ◽  
S. K. Malik
Keyword(s):  
Critical Current Density ◽  
Critical Current ◽  
Current Density ◽  
Flux Pinning ◽  
Mgb2 Superconductor ◽  
High Critical Current Density ◽  
Doped Mgb2

Effect of combined addition of nano-SiC and nano-Ho2O3 on the in-field critical current density of MgB2 superconductor

2010 ◽  
Vol 107 (1) ◽  
pp. 013907 ◽  
Author(s):  
Neson Varghese ◽  
K. Vinod ◽  
M. K. Chattopadhyay ◽  
S. B. Roy ◽  
U. Syamaprasad
Keyword(s):  
Critical Current Density ◽  
Critical Current ◽  
Current Density ◽  
Mgb2 Superconductor

scholarly journals High critical current density in Ti-doped MgB2/Ta/Cu tape by powder-in-tube process

2002 ◽  
Vol 92 (12) ◽  
pp. 7341-7344 ◽  
Author(s):  
B. Q. Fu ◽  
Y. Feng ◽  
G. Yan ◽  
Y. Zhao ◽  
A. K. Pradhan ◽  
...  
Keyword(s):  
Critical Current Density ◽  
Critical Current ◽  
Current Density ◽  
High Critical Current Density ◽  
Doped Mgb2 ◽  
Powder In Tube

Phase Formation and Electrical Transport Properties of Nano-Sized SnO2 Added (Tl0.85Cr0.15)Sr2CaCu2O7-δ Superconductors

2017 ◽  
Vol 268 ◽  
pp. 315-319 ◽  
Author(s):  
Wei Kong ◽  
Ing Kong ◽  
Mohd Mustafa Awang Kechik ◽  
Roslan Abd-Shukor
Keyword(s):  
Critical Current Density ◽  
Transport Properties ◽  
Critical Current ◽  
Phase Formation ◽  
Current Density ◽  
Electrical Transport ◽  
Energy Dispersive ◽  
Transport Critical Current Density ◽  
Electrical Transport Properties ◽  
X Ray

In this work, the effect of nano-sized SnO2 addition on the phase formation and electrical transport properties of (Tl0.85Cr0.15)Sr2CaCu2O7-δ (Tl-1212) superconductor was investigated. Thallium-based high temperature superconductor (HTS) with nominal starting composition (Tl0.85Cr0.15) Sr2CaCu2O7-δ was prepared using high purity oxide powders via solid state reaction method. Nano-sized SnO2 with 0.01 – 0.05 wt.% were added into Tl-1212 superconductors. The characteristic of the samples were determined by powder X-ray diffraction method (XRD), scanning electron microscopy (SEM), energy dispersive X-Ray analysis (EDX), electrical resistance measurements and transport critical current density measurements. Nano-sized SnO2 added (Tl0.85Cr0.15)Sr2CaCu2O7-δ showed Tc-zero between 93 and 95 K. All of the samples indicated a dominant phase of Tl-1212 with a minor phase of Tl-1201. The highest Jc (at 77 K) was shown by sample with 0.03 wt.% at 3260 mA/cm2. SnO2 has significantly enhanced the transport critical current density of Tl-1212 superconductor by acting as flux pinning centers. However, further addition of nano-sized SnO2 in Tl-1212 superconductor caused degradation in Jc. The SEM micrographs with energy dispersive X-Ray analysis (EDX) showed that SnO2 were well distributed in all the samples.

Effect of Pulsed Magnetic Field Processing on MgB2 Superconductors

2007 ◽  
Vol 546-549 ◽  
pp. 2063-2066 ◽  
Author(s):  
W.X. Li ◽  
Ying Li ◽  
M.Y. Zhu ◽  
R.H. Chen ◽  
H.M. Jin ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Critical Current Density ◽  
Critical Current ◽  
Current Density ◽  
Pulsed Magnetic Field ◽  
Pinning Force ◽  
Critical Current Density Jc ◽  
Mgb2 Superconductors ◽  
Doped Mgb2 ◽  
Flux Pinning Force

Pulsed magnetic field was first employed in the study on MgB2 superconductors. Superconductivity properties and microstructures of Zn and SiC doped MgB2 were discussed in this paper. The superconductors showed different superconductivities after magnetic sintering. Critical current density and flux pinning force were relevant to the dopants properties in MgB2. Grains in the pulsed magnetic processed MgB2 matrix were smaller than those in the normal processed one. The refinement microstructures have caused the critical current density (Jc) anisotropy in both the Zn and SiC doped MgB2.

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