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Influence of Ag Addition on Superconducting Property of Carbon-black Doped $MgB_2$ Superconductor  

Kim, H.J. (Materials Engineering Department, Korea University of Technology and Education)
Kim, H.J. (Materials Engineering Department, Korea University of Technology and Education)
Kim, C.J. (Nuclear Science Division, Korea Atomic Energy Research Institute)
Park, H.W. (Materials Engineering Department, Korea University of Technology and Education)
Publication Information
Progress in Superconductivity / v.12, no.1, 2010 , pp. 1-5 More about this Journal
Abstract
In this work we synthesized both MgB2 and Carbon doped MgB2 superconductor with Ag addition via high energy milling and substituent heat treatment. Heat treatments were performed at $900\;^{\circ}C$ for 30 min in flowing Ar gas. We varied amount of Ag powder. In a range of Ag powder was 0~5wt%. The effect of Ag was correlated with superconducting properties. The results show a slight decrease in critical temperature ($T_c$) and a reduction of critical current density ($J_c$) at high fields for the Ag-doped samples as compared to the un-doped samples. Reduction of $J_c$ may be due to the formation of MgAg compound.
Keywords
$MgB_2$; attrition milling; Ag powder addition; critical current density;
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Times Cited By KSCI : 3  (Citation Analysis)
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1 W. Hassler, M. Herrmann, C. Rodig, M. Schubert, K. Menkov, B. Holzapfel, "Further increase of the critical current density of $MgB_2$ tapes with nano carbon-doped mechanically alloyed precursor", Supercond. Sci. Technol. 21 (2008) 062001.   DOI   ScienceOn
2 Qian Zhao, Yongchang Liu, Yajing Han, Zongqing Ma, Qongzhi Shi, Zhiming Gao, "Effect of heating rates on microstructure and superconducting properties of pure $MgB_2$", Physica C 469 (2009)857.   DOI   ScienceOn
3 Jung-Ho Ahn, Minkyu Jang, Sangjun Oh, "Effect of ball milling on the superconducting properties of C and C-based compound doped $MgB_2$", Progress in Superconductivity 10-1 (2008) 17.   과학기술학회마을
4 J. H. Lee, S. Y. Shin, B. .H. Jun, C. .J. Kim, H. W. Park, "Refinement of crystalline boron and the superconducting properties of $MgB_2$ by attrition ball milling", Progress in Superconductivity 10-1 (2008).   과학기술학회마을
5 Byung- Hyuk Jun, Yi-Jeong Kim, Chan-Joong Kim, "Enhancement of critical current density of $MgB_2$ prepared using mechanically milld and glycerin treated boron powder", Progress in Superconductivity 10-1 (2008) 40.   과학기술학회마을
6 D. Kumar, S.J. Pennycook, J. Narayan, H. Wangand A. Tiwari, "Role of silver addition in the synthesis of high critical current density $MgB_2$ bulk superconductors", Supercond. Sci. Technol. 16 (2003) 455-458   DOI   ScienceOn
7 S.C. Yan, G. Yan, C.F. Liu,Y. F. Lu, L. Zhou, "Experimental study on the phase formation for the Mg-B system in Ar atmosphere", Journal of Alloys and Compounds 437(2007) 298.   DOI   ScienceOn
8 S.X. Dou, O. Shcherbakova, W.K. Yeoh, J.H. Kim, S. Soltanian, X.L. wang, C. Senatore, R. Flukiger, M. Dhalle, O. Husnjak, and E. Babic, "Mechanism of Enhancement in Electromagnetic Properties of $MgB_2$ by nano SiC doping", Physical Review Letters 98 (2007) 097002.   DOI   ScienceOn
9 T. Sun, X. P. Zhang, Y. G. Zhao, R. Shen, K. wang, L. W. Zhang, B. S. Cao, Y. H. Xiong , P.J. Li, H. H. Wen, "Study of the reaction between $MgB_2$ and Ag at high temperature", Physica C 382 (2002) 367.   DOI   ScienceOn
10 W. K .Yeoh, J.H Kim, J. Horvat, X. Xu, M. J .Qin, S. X. Dou, C.H. Jiang, T. Nakane, H Kumakura and P Munroe, "Control of nano carbon substitution for enhancing the critical current density in $MgB_2$", Supercond. Sci. Technol. 19 596-599.
11 J. Nagamatsu, N. Nakagawa, T. Muranaka, Y. Zenitani, J. Akimitsu, "Superconductivy at 39K", Nature 410 (2001) 63.   DOI   ScienceOn
12 B.J Senkowicz, A .Polyanskii, R.J. Mungall, Y. Zhu, J.E. Giencke, P.M. Voyles, C.B. Eom, E.E. Hellstrom and D.C. Larbalestier, "Understanding the route to high critical current density in mechanically alloyed $Mg(B_{1-x}C_x)_2$", Supercond. Sci. Technol. 20 (2007) 650-657.   DOI   ScienceOn
13 D. H. L. Ng, W. M. Hon, "Effect of boron concentration on the superconductive and microstructural properties of $MgB_2$/Mg composites", Physica C 460-462 (2007) 783.   DOI   ScienceOn
14 S.C. Yan, G. Yan, C.F. Liu, Y. F. Lu, L. Zhou, "Effect of carbon doping on the formation and stability of MgB2 phase", Journal of Alloys and Compounds 459(2008) 452   DOI   ScienceOn
15 X. Xu, J. H. Kim, M. S. A. Hossain, J. S. Park , Y. Zhao, S. X. Dou, W. K. Yeoh, M. Rindfleisch, M. Tomsic, "A correlation between transport current density and grain connectivity in $MgB_2$/Fe wire made from ball-milled boron", J. Appl. Phys. 103 (2008) 023912.   DOI   ScienceOn
16 R.H.T. Wilke, S.L. Bud'ko, P.C. Canfield, D. K. Finnemore, S.T. Hannahs, "Synthesis of $Mg(B_{1-x}C_x)_2$powders", Physica C 432 (2005) 193.   DOI   ScienceOn
17 C. U. Jung, S. .I, Lee, "Effect of unreacted Mg on the pinning properties of $MgB_2$", Journal of Magnetism and Magnetic Materials 310 (2007) 501.   DOI   ScienceOn