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

作者：Zhao Y^*; Feng Y; Huang DX; Machi T; Cheng CH; Nakao K; Chikumoto N; Fudamoto Y; Koshizuka N; Murakami M

来源：Physica C-Superconductivity and Its Applications, 2002, 378: 122-126.

DOI：10.1016/S0921-4534(02)01395-3

• critical currents
• metals
• alloys and binary compounds
• flux pinning

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 sintering assistant, which significantly enhances the grain connection of the MgB2 bulk materials during sintering processing. With this technique, we have fabricated Ti-doped MgB2 bulk materials consisting of fine 10 nm scale particles and achieved a high J(c) over 1 MA/cm(2) in 0 T at 20 K. The large enhancement of

• 出版日期2002-10-1
• 单位西北有色金属研究院