| Effect of Nano－SiC and Nano－Si Doping on Critical Current Density of MgB2 |
| |
| 引用本文： | H.K.Liu S.H.Zhou S.Soltanian J.Horvat A.V.Pan M.J.Qin X.L.Wang M.Ionescu S.X.Dou. Effect of Nano－SiC and Nano－Si Doping on Critical Current Density of MgB2[J]. 清华大学学报, 2003, 8(3): 307-315 |
| |
| 作者姓名： | H.K.Liu S.H.Zhou S.Soltanian J.Horvat A.V.Pan M.J.Qin X.L.Wang M.Ionescu S.X.Dou |
| |
| 作者单位： | InstituteforSuperconductingandElectronicMaterials,UniversityofWollongong,NorthfieldsAvenue,WollongongNSW2522,Australia |
| |
| 摘 要： | The discovery of superconductivity in magnesium diboride (MgB2) has opened up a new field in materials science research. It offers a possibility of a new class of high performance superconducting materials for practical applications because of the relatively low cost of fabrication, high critical current densities (Jc)and fields, large coherence length, absence of Weak links, higher Tc (Tc = 39 K) compared with Nb3Sn and Nb-Ti alloys (two or four times that of Nb3Sn and Nb-Ti alloys). However, the weak flux pinning in the magnetic field remains a major challenge. This paper reports the most interesting results on nenomaterial (SiC and Si) doping in magnesium diboride. The high density of nano-scele defects introduced by doping is responsible for the enhanced pinning. The fabrication method, critical current density, microstructures, flux pinning and cost for magnesium diboride bulks, wires and tapes are also discussed. It is believed that high performance SiC doped MgB2 will have a great potential for many practical applications at 5K to 25K up to 5T.
|
| 关 键 词： | 纳米碳化硅 临界电流密度 MgB2 二硼化镁 铌钛合金 超导体 |
Effect of Nano-SiC and Nano-Si Doping on Critical Current Density of MgB2 |
| |
| H.K.Liu,S.H.Zhou,S.Soltanian,J.Horvat,A.V.Pan,M.J.Qin,X.L.Wang,M.Ionescu,S.X.Dou. Effect of Nano-SiC and Nano-Si Doping on Critical Current Density of MgB2[J]. Tsinghua Science and Technology, 2003, 8(3): 307-315 |
| |
| Authors: | H.K.Liu S.H.Zhou S.Soltanian J.Horvat A.V.Pan M.J.Qin X.L.Wang M.Ionescu S.X.Dou |
| |
| Abstract: | The discovery of superconductivity in magnesium diboride (MgB2) has opened up a new field in materials science research. It offers a possibility of a new class of high performance superconducting materials for practical applications becauseigher Tc (Tc=39 K) compared with Nb3Sn and Nb-Ti alloys (two or four times that of Nb3Sn and Nb-Ti alloys). However, the weak flux pinning in the magneticfield remains a major challenge. This paper reports the most interesting results on nanomaterial (SiC and Si) doping in magnesium diboride. The high densityof nano-scale defects introduced by doping is responsible for the enhanced pinning. The fabrication method, critical current density, microstructures, flux pinning and cost for magnesium diboride bulks, wires and tapes are also discussed. It is believed that high performance SiC doped MgB2 will have a great potential for many practical applications at 5 K to 25 K up to 5 T. |
| |
| Keywords: | magnesium diboride (MgB2) MgB2/Fe wires doped with nano-SiC MgB2/Fewires doped with nano-Si critical current density flux pinning |
| 本文献已被 维普 万方数据 等数据库收录！ |
|
