CHARACTERISTICS OF YBCO STEP-EDGE JUNCTIONS FABRICATED BY A CHEMICAL ETCHING PROCESS

被引：2
|
作者：
PARK, CH [1 ]
HONG, JP [1 ]
SONG, IH [1 ]
LEE, EH [1 ]
MOON, CW [1 ]
SONG, SA [1 ]
LEE, JW [1 ]
机构：
[1] SAMSUNG ADV INST TECHNOL,CTR MAT ANAL,SUWON,SOUTH KOREA
来源：
PHYSICA C | 1994年 / 234卷 / 1-2期
关键词：
D O I：
10.1016/0921-4534(94)90058-2
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
High-T-c step-edge junctions have successfully been fabricated on chemically etched MgO substrate steps. Epitaxial thin films of YBa2CU3O7-delta have been prepared utilizing an off-axis RF magnetron sputtering method. AFM observations were made to investigate surface morphology of the etched substrate and YBCO films. The microstructures of the YBCO films were also observed by HRTEM, which clearly showed a 40 degrees tilted grain boundary at the concave side of the step. The voltage-current characteristics, magnetic field dependence of the critical current, microwave and millimeter-wave response of the SEJs were investigated. The response of millimeter-wave (f=94 GHz) irradiations on the SEJ clearly showed well-defined constant voltage steps of 194 mu V. In addition, the characteristics of DC-SQUID made of step-edge junctions were also observed at 67 K.
引用
收藏
页码：85 / 90
页数：6
相关论文
共 50 条
  • [1] Directly coupled DC-SQUIDs of YBCO step-edge junctions fabricated by a chemical etching process operating at 77 K
    Gohng, J
    Lee, EH
    Song, IH
    Sok, J
    Park, SJ
    Lee, JW
    Dosquet, CY
    [J]. IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 1997, 7 (02) : 3694 - 3697
  • [2] YBCO step-edge junctions with high IcRn
    Mitchell, E. E.
    Foley, C. P.
    [J]. SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2010, 23 (06):
  • [3] YBCO STEP-EDGE JUNCTIONS ON VARIOUS SUBSTRATES
    PETTIETTEHALL, CL
    LUINE, JA
    MURDUCK, J
    BURCH, JF
    HU, R
    SERGANT, M
    STJOHN, D
    [J]. IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 1995, 5 (02) : 2087 - 2090
  • [4] INVESTIGATION OF YBCO STEP-EDGE JOSEPHSON JUNCTIONS
    Siegel, M.
    Herrmann, K.
    Copetti, C.
    Jia, C. L.
    Kabius, B.
    Schubert, J.
    Zander, W.
    Braginski, A. I.
    Seidel, P.
    [J]. IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 1993, 3 (01) : 2369 - 2372
  • [5] Analysis of step etching on SrTiO3 substrates for the step-edge YBCO Josephson junctions
    Chen, GH
    Wang, J
    Zhao, SP
    Han, B
    Xu, FZ
    Yang, QS
    [J]. CHINESE PHYSICS LETTERS, 2001, 18 (01) : 106 - 108
  • [6] Trimming, stability and passivation of YBCO step-edge junctions
    Du, H
    Foley, CP
    [J]. PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2003, 391 (01): : 31 - 41
  • [7] DC SQUIDS BASED ON YBCO STEP-EDGE JUNCTIONS
    MATARAZZO, S
    BARBANERA, S
    BOFFA, V
    BRUZZESE, R
    CICIULLA, F
    GAMBARDELLA, U
    MURTAS, F
    PAGANO, S
    PENNA, M
    ROMEO, C
    [J]. JOURNAL OF SUPERCONDUCTIVITY, 1993, 6 (06): : 391 - 395
  • [8] Effects of step conditions on the properties of YBCO step-edge Josephson junctions
    Hwang, Y
    Nam, BC
    Lee, MC
    Kim, DW
    Lee, SG
    Kim, IS
    Kim, JT
    Park, YK
    Song, IH
    [J]. IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 1999, 9 (02) : 4285 - 4287
  • [9] YBCO Step-Edge Junctions: Influence of Morphology on Junction Transport
    Mitchell, E. E.
    Foley, C. P.
    [J]. IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 2011, 21 (03) : 371 - 374
  • [10] Nanowires fabricated by step-edge decoration process
    不详
    [J]. MRS BULLETIN, 2001, 26 (03) : 166 - 166
12345