金属学报  2006, Vol. 42 Issue (11): 1121-1124

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非原位单芯MgB2/Fe带的织构和Jc的各向异性研究

索红莉 马红霞 王 颖 刘 敏 赵 跃 马 麟 周美玲

北京工业大学材料学院功能材料教育部重点实验室; 北京 100022

Texture and Anisotropy of Jc of ex situ MgB2/Fe Mono—Filamentary Tapes

SUO Hongli; MA Hongxia; WANG Ying; LIU Min; ZHAO Yue; MA Lin; ZHOU Meiling

Key Laboratory of Advanced Functional Materials of Education Ministry; College of Materials Science and Engineering; Beijing University of Technology; Beijing 100022

索红莉; 马红霞; 王颖; 刘敏; 赵跃; 马麟 ; 周美玲 . 非原位单芯MgB2/Fe带的织构和Jc的各向异性研究[J]. 金属学报, 2006, 42(11): 1121-1124 .
, , , , , , . Texture and Anisotropy of Jc of ex situ MgB2/Fe Mono—Filamentary Tapes[J]. Acta Metall Sin, 2006, 42(11): 1121-1124 .

摘要 参考文献 相关文章 Metrics 全文: PDF(650 KB)   摘要: 本文用不同粒度的初始MgB2粉末通过PIT技术制备出非原位单芯MgB2/Fe超导带，测量了不同磁场和温度下MgB2/Fe带的Jc值，发现它具有各向异性，分析表明其各向异性的大小受初始粉末尺寸大小的影响。我们对剥离铁包套后MgB2芯的X-ray衍射花样进行了拟合分析，定量计算了MgB2/Fe界面和MgB2芯中心处的织构度，发现两处均形成了轻微的织构取向，而且Fe/MgB2界面处的织构稍强些。试验还发现MgB2/Fe带中MgB2的结晶尺寸随初始粉末尺寸的增大而增大。最后讨论了粉末粒度大小和织构度与Jc各向异性的关联性。 关键词 ： 非原位MgB2/Fe超导带,  X-ray衍射拟合分析     Abstract：In this paper, the critical current density of ex-situ MgB2/Fe sheathed mono- filamentary tapes has been measured at various magnetic fields and different temperatures. The texture and anisotropy of Jc in these tapes were presented in detail. The commercial MgB2 powder was ball-milled in order to obtain different starting powder grain sizes. It was found that the anisotropy of Jc is influenced significantly by the starting powder grain size. The crystallite size of the annealed MgB2 core is more pronounced for the sample with larger starting powder grain size . In order to understand the origin of Jc anisotropy, we have undertaken detailed X-ray refinements on the degree of texturing in the MgB2 filaments after mechanical removal of the Fe sheath. The degree of texturing of the filaments at the interface Fe/MgB2 and in the centre of the MgB2 filaments has been determined. A moderate texture has been found, being slightly better at the interface between Fe and MgB2 core. The correlation among the starting power size, texturing and the anisotropy of Jc was discussed. Key words： ex- situ MgB2/Fe tapes    X-ray refinements analysis    收稿日期: 2006-01-23      ZTFLH:  TM26   服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 索红莉 马红霞 王颖 刘敏 赵跃 马麟 周美玲 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y2006/V42/I11/1121 [1] Nagamatzu J, Nakagawa N, Muranka T, Zenitanim Y, Akimitzu J. Nature, 2001; 410: 63 [2] Kovac P, Husek I, Grovenor C, Salter C. Supercond Sci Technol, 2003; 16: 292 [3] Kitaguchi H, Matzumoto A, Hatakeyama H. Supercond Sci Technol, 2004; 17: 486 [4] Yamamoto K, Osamura K, Balamurugan S, Nakamura T, Hoshino T, Muta I. Supercond Sci Technol, 2003; 16: 1052 [5] Suo H L, Beneduce C, Dhall M, Musolino N, Su X D, Flukiger R. Adv Cryog Eng, 2002; 48: 872 [6] Suo H L, Beneduce C, Dhall M, Musolino N, Genoud J Y, Flukiger R. Appl Phys Lett, 2001; 79: 3116 [7] Goldacker W, Schlachter S I, Obst B, Eisterer M. Supercond Sci Technol, 2004; 17: 490 [8] Feng Y, Yan G, Zhao Y, Liu C F, Liu X H, Zhang P X, Zhou L, Sulpice A, Mossang E, Hebral B J. Phys Condens Matter, 2004; 16: 1803 [9] Yamada H, Hirakawa M, Kumakura H, Matzumoto A. Appl Phys Lett, 2004; 84: 1728 [10] Flukiger R, Lezza P, Beneduce C, Musolino N, Suo H L. Supercond Sci Technol, 2003; 16: 264 [11] Grasso G, Malagoli A, Marre D, Bellingeri E, Braccini V, Roncallo S, Scati N, Siri A S. Physica, 2002; 378C: 899 [12] Flukiger R, Grasso G, Grivel J C, Marti F, Dhalle M, Huang Y. Supercond Sci Technol, 1997; 10: 68 [13] Young R A. The Rietveld Method. Oxford, UK: Oxford Univesity Press, 1993: 156 [14] Suo H L, Wang Y, Ma H X, Liu M, Zhao Y, Ma L, Li Y M, Zhang Z L, Zhou M L. Chin J Nonferrous Met, 2006; to be published (索红莉,王颖,马红霞,刘敏,赵跃,马麟,李亚明,张子立,周美玲,中国有色金属学报,2006,待发表) [15] Keijser T H, Langford J I, Mittemeier E J, Vogels B P. J Appl Cryst allogr, 1982; 15: 308 [16] Choi E M, Kim H J, Gupta S K, Chowdhury P, Kim K H, Lee S I, Kang W N. Phys Rev, 2004; 69B: 224 [17] Angst M, Puzniak R, Wisniewski A, Jun J, Kazakov S M, Karpinski J, Roos J, Keller H. Phys Rev Lett, 2002; 88: 16 [18] Flukiger R, Suo H L, Musolino N, Beneduce C, Toulemonde P, Lezza P. Physica, 2003; 385C: 286 [19] Senatore C. PhD Dissertation Dipartimento di Fisica, Universita degli studi di Salerno, Salerno, Italy, 2004: 167 No related articles found! Viewed Full text Abstract Cited   Shared      Discussed