Effects of pre-carbonization treatment on the sintering process and Jc performance of sugar-doped MgB2 superconductors

✍ Scribed by Baoqun Ning; Zesheng Yan

• Publisher: Elsevier Science
• Year: 2010
• Tongue: English
• Weight: 436 KB
• Volume: 470
• Category: Article
• ISSN: 0921-4534
• DOI: 10.1016/j.physc.2009.10.009

✦ Synopsis

The carbonization treatment was employed to the sugar-coated B powders before it mixed with Mg powders. It is found that the pre-carbonization treatment could effectively suppress the formation of MgO and Mg 2 C 3 impurity in the sugar-doped samples and thus result in an improved J c at low fields in the sugar-doped samples. Besides, the sintering process of sugar-doped samples was also investigated combined with the thermal analysis and it is found that the sugar addition could obviously lower the onset temperature of the solid-solid reaction between Mg and B.