Phase formation and superconducting properties of mechanically alloyed Nb3(Al1−xGex) system. (16th May 2016)

• Record Type: Journal Article
• Authors: Li, Pingyuan; Chen, Yongliang; Xu, Liyuan; Zhang, Yun; Pan, Xifeng; Yan, Guo; Zhang, Yong; Cheng, C H; Feng, Yong; Zhao, Yong
• Is Part Of: Superconductor science & technology. Volume 29:Number 7(2016:Jul.)
• Publication Date: 2016-05-16
• Subjects: Nb3(Al1−xGex) -- high-energy ball milling -- superconductivity -- critical current density; 74.70.Ad -- 74.70.-b -- 81.20.Ev -- 61.72.-y; Superconductivity -- Periodicals; Superconductors -- Periodicals; 537.623
• DOI: 10.1088/0953-2048/29/7/075001
• Languages: English
• ISSNs: 0953-2048

Abstract

Abstract: Mechanically alloyed Nb3 (Al1− x Ge x ) compounds with nominal composition x = 0%, 10%, 15%, 20%, 25% and 30% were synthesized using high-energy ball milling. The effects of Ge content and sintering temperature on the formation of the Nb3 Al superconducting phase at a relatively low temperature without the extremely high-temperature rapid heating, quenching and transformation process were studied. The results revealed that Ge doping in Nb3 Al improved the formation of the A15 phase at low temperatures, enhanced the superconducting transition temperature ( T c ), and refined the grain structure, thus improving the overall superconducting properties. The pinning behavior was also studied for the optimized sample.