MEASUREMENTS OF THE THICKNESS DEPENDENCE OF THE SURFACE-RESISTANCE OF LASER ABLATED HIGH - TC SUPERCONDUCTING THIN-FILMS

被引:6
作者
KUHLEMANN, T [1 ]
HINKEN, JH [1 ]
机构
[1] FUBA RES CTR,W-3202 BAD SALZDETFURTH,GERMANY
关键词
D O I
10.1109/20.133312
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
We report on measurements of the surface resistance of thin Y1Ba2Cu3O7-x (YBCO) films made by laser ablation on SrTiO3. Several films were prepared with thicknesses ranging from 100 nm to 400 nm. The surface resistance of these films was measured automatically in a temperature range from 20 K to 90 K using a copper cavity at 66.8 GHz. The measured values quantitatively show the expected temperature dependence of the effective surface resistance R(eff) on the thickness of the superconducting films. From the measured R(eff) one can calculate the true surface resistance R(ST) by an analytical approximation, which takes into consideration substrate losses and multireflections within the film. Results show that within the measurement uncertainty R(ST) does not change with changing film thickness. At 77 K R(ST) values of about 15 m-OMEGA were measured, at 30 K R(ST) reached 9 m-OMEGA.
引用
收藏
页码:872 / 875
页数:4
相关论文
共 12 条
  • [1] LOW-TEMPERATURE PREPARATION OF SUPERCONDUCTING YBA2CU3O7-DELTA FILMS ON SI, MGO, AND SRTIO3 BY THERMAL COEVAPORATION
    BERBERICH, P
    TATE, J
    DIETSCHE, W
    KINDER, H
    [J]. APPLIED PHYSICS LETTERS, 1988, 53 (10) : 925 - 926
  • [2] RF PROPERTIES OF HIGH-TC SUPERCONDUCTORS
    BOHN, CL
    DELAYEN, JR
    DOSSANTOS, DI
    LANAGAN, MT
    SHEPARD, KW
    [J]. IEEE TRANSACTIONS ON MAGNETICS, 1989, 25 (02) : 2406 - 2409
  • [3] COLLIN RE, 1966, F MICROWAVE ENG
  • [4] SURFACE-RESISTANCE OF YBA2CU3O7 FILMS ON SRTIO3 AND LAGAO3 SUBSTRATES
    COOKE, DW
    GRAY, ER
    HOULTON, RJ
    RUSNAK, B
    MEYER, EA
    BEERY, JG
    BROWN, DR
    GARZON, FH
    RAISTRICK, ID
    ROLLET, AD
    BOLMARO, R
    [J]. APPLIED PHYSICS LETTERS, 1989, 55 (09) : 914 - 916
  • [5] TEMPERATURE, FREQUENCY, AND RF FIELD-DEPENDENCE OF THE SURFACE-RESISTANCE OF POLYCRYSTALLINE YBA2CU3O7-X
    DELAYEN, JR
    BOHN, CL
    [J]. PHYSICAL REVIEW B, 1989, 40 (07): : 5151 - 5154
  • [6] DELAYEN JR, 1988, 3RD P WORKSH RF SUP, P229
  • [7] SURFACE-RESISTANCE OF POLYCRYSTALLINE HIGH-TC SUPERCONDUCTORS BETWEEN 3 AND 90 GHZ
    HEIN, M
    MULLER, G
    PIEL, H
    KLEIN, U
    PEINIGER, M
    [J]. JOURNAL OF THE LESS-COMMON METALS, 1989, 151 (1-2): : 71 - 76
  • [8] MEASUREMENT OF MICROWAVE SURFACE-RESISTANCE OF PATTERNED SUPERCONDUCTING THIN-FILMS
    KALOKITIS, D
    FATHY, A
    PENDRICK, V
    BROWN, R
    BRYCKI, B
    BELOHOUBEK, E
    NAZAR, L
    WILKENS, B
    VENKATESAN, T
    INAM, A
    WU, XD
    [J]. JOURNAL OF ELECTRONIC MATERIALS, 1990, 19 (01) : 117 - 121
  • [9] MILLIMETER WAVE SURFACE-RESISTANCE OF EPITAXIALLY GROWN YBA2CU3O7-X THIN-FILMS
    KLEIN, N
    MULLER, G
    PIEL, H
    ROAS, B
    SCHULTZ, L
    KLEIN, U
    PEINIGER, M
    [J]. APPLIED PHYSICS LETTERS, 1989, 54 (08) : 757 - 759
  • [10] KLEIN N, 1989, WUBDIS893