Thickness dependence of critical current density in MgB2 films fabricated by hybrid physical-chemical vapor deposition

Chen Yi-Ling; Zhang Chen; He Fa; Wang Da; Wang Yue; Feng Qing-Rong

doi:10.7498/aps.62.197401

Abstract

MgB2 superconducting films with a thickness of 10 nm to 8 μ have been prepared on SiC substrates by hybrid physical-chemical vapor deposition (HPCVD). The study on Tc and Jc shows that as the film grows thicker, Tc increases and then keeps stable, which Jc increases at first, and then drops dramatically. We get the maximum Tc at 41.4 K and Jc at 2.3× 108 A·cm-2. This also shows that we can use the method of HPCVD to prepare high-quality of clean MgB2 film. And its thickness can be from 10nm ultrathin films and 100 nm thin films up to 8 μm thick film. It is the first time so far as we know that Tc and Jc are studied in this range of thickness. This will lead to a complete and systematical understanding of the superconducting MgB2 films. And it is also important and practical to choose the thickness when preparing MgB2 films.

Keywords:

MgB2 superconducting film /
hybrid physical-chemical vapor deposition /
thickness /
critical current density

Authors and contacts

1.
Application Superconductivity Research Center, State Key Laboratory for Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, China;
2.
School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China
Funds: Project supported by the National Basic Research Program of China (Grant Nos. 2006CD601004, 2011CB605904, 2011CBA00104), the National Natural Science Foundation of China (Grant Nos. 51177160, 11074008), and the Fund for Fostering Talents in Basic Science of the National Natural Science Foundation of China (Grant No. J0630311).

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[9]	Zhang C, Wang D, Zhang Y, Wang Y, Feng Q R, Gan Z Z 2013 IEEE Transactions on Applied Superconductivity 237500204
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[24]	Pan J Y, Zhang C, HeE F, Feng Q R 2013 Acta Phys. Sin. 62 127401 (in Chinese) [潘杰云, 张辰, 何法, 冯庆荣 2013 物理学报 62 127401]
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[26]	Wang Z D, Chen Z J, Duan Z Z, Wang W Q 2011 Chinese Phys. Lett. 18 677
[27]	Cao G Z, Wang Y 2012 Nanostructures and Nanomaterials-Synthesis Properties, and Applications 2nd Edition (Higher Education Press) p318 (in Chinese) [曹国忠, 王颖著, 董星龙译 2012 纳米结构和纳米材料合成、性质及应用 (北京: 高等教育出版社) 第318页]
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Cited By

[1]	Zeng X H, Pogrebnyakov A J, Kotcharov A, Jones J E, Xi X X, Lysczek E M, Redwing J M, Xu S Y, Li Q, Lettieri J, Schlom D G, Tian W, Pan X Q, Liu Z K 2002 Nat. Mater. 1 1
[2]	Zhuang C G, Meng S, Zhang C Y, Feng Q R, Gan Z Z, Yang H, Jing Y, Wen H H, Xi X X 2009 Journal of Applied Physics 104 013924
[3]	Li F, Guo T, Zhang K C, Chen C P, Feng Q R 2007 Physica C 452 6
[4]	Li F, Guo T, Zhang K C, Chen L P, Chen C P, Feng R 2006 Supercond. Sci. Technol.19 1196
[5]	Zhuang C G, Yao D, Li F, Zhang K C, Feng Q R, Gan Z Z 2007 Supercond. Sci. Technol. 20 287
[6]	He F, Xie D T, Feng Q R, Liu K X 2012 Supercond. Sci. Technol. 25 065003
[7]	Li F, Guo T, Zhang K C, Chen C P, Feng Q R 2006 Front.Phys.China. 4 446
[8]	Zhang K C, Ding L L, Zhuang C G, Chen L P, Chen C P, Feng Q R 2006 Phys. Stat Sol. A 203 2463
[9]	Zhang C, Wang D, Zhang Y, Wang Y, Feng Q R, Gan Z Z 2013 IEEE Transactions on Applied Superconductivity 237500204
[10]	Mina Hanna, Shufang Wang, Joan M Redwing, Xi X X, Kamel Salama 2009 Supercond. Sci. Technol. 22 015024
[11]	Wang S F, Liu Z, Zhou Y L, Zhu Y B, Chen Z H, Lu H B,Cheng B L, Yang G Z 2004 Supercond. Sci. Technol. 17 1126
[12]	Yakinci Z D, Aydogdu Y 2011 J. Supercond. Nov Magn. 24 523
[13]	Chandra Shekhar, Srivastava O N 2011 Physica C 471 104
[14]	Wang Y Z, Zhuang C G, Sun X A, Huang X, Fu Q, Liao Z M, Yu D P, Feng Q R 2009 Supercond. Sci. Technol. 22 125015
[15]	Zeng X H, Pogrebnyakov A V, Zhu M H, Jones J E, Xi X X, Xu S Y, Wertz E, Li Q 2003 Appl. Phys. Lett 82 2097
[16]	Jung S G, Seong W K, Kang W N 2012 Journal of Applied Physics 111 053906
[17]	Wang Y B, Meng S, Dai Q, Yan Zhang, Feng O R 2012 Advanced Materials Research 567 153
[18]	Xi X X, Pogrebnyakov A V, Zeng X H, Redwing J M, Xu S Y, Li Q, Liu Z K, Lettieri J, Vaithyanathan V, Schlom D G, Christen H M,Y Zhai H, Goyal A 2004 Supercond. Sci. Technol. 17 S196
[19]	Bean C P 1962 Phys Rev. 8 250
[20]	Wang Y B, Xue C, Feng Q R 2012 Acta. Phys. Sin. 61 197401 (in Chinese) [王银博, 薛驰, 冯庆荣 2012 物理学报 61 197401]
[21]	Feng Q R, Chen C P, Xu J, Kong L W, Chen X, Wang Y Z, Zhang Y, Gao Z X 2004 Physica C-superconductivity and its applications 411 41
[22]	Yan S C, Yan G, Liu C F, Lu Y F, Zhou L J 2007 Alloys Comp. 437 298
[23]	Zhuang C G, Tan T, Wang Y, Bai S S, Ma X B, Yang H, Zhang G H, He Y S, Wen H H, Xi X X, Feng Q R, Gan Z Z 2008 Supercond. Sci. Technol. 22 025002
[24]	Pan J Y, Zhang C, HeE F, Feng Q R 2013 Acta Phys. Sin. 62 127401 (in Chinese) [潘杰云, 张辰, 何法, 冯庆荣 2013 物理学报 62 127401]
[25]	Sun X, Huang X, Wang Y Z, Feng Q R 2011 Acta. Phys. Sin. 60 087401 (in Chinese) [孙玄, 黄煦, 王亚洲, 冯庆荣 2011 物理学报 60 087401]
[26]	Wang Z D, Chen Z J, Duan Z Z, Wang W Q 2011 Chinese Phys. Lett. 18 677
[27]	Cao G Z, Wang Y 2012 Nanostructures and Nanomaterials-Synthesis Properties, and Applications 2nd Edition (Higher Education Press) p318 (in Chinese) [曹国忠, 王颖著, 董星龙译 2012 纳米结构和纳米材料合成、性质及应用 (北京: 高等教育出版社) 第318页]
[28]	Blatter G, Feigel’man M V, Geshkenbein V B, Larkin A I, Vinokur V M 1994 Rev. Mod. Phys. 66 1125

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Vol. 62, Issue 19 - 2013-10-05

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