CRITICAL-CURRENT IN ELECTROPHORETICALLY DEPOSITED THICK-FILMS OF YBCO SUPERCONDUCTOR

被引:19
作者
BHATTACHARYA, D
ROY, SN
BASU, RN
DASSHARMA, A
MAITI, HS
机构
[1] Central Glass and Ceramic Research Institute, Calcutta
关键词
D O I
10.1016/0167-577X(93)90204-B
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Thick films of YB2Cu3O7-delta (YBCO) superconductor have been prepared by the electrophoretic deposition technique using a flexible silver strip as the substrate. Effects of several deposition parameters, e.g., time of deposition, particle size of the powder, number of layers deposited, etc., on the various properties of the films have been studied in detail. Microstructural investigation of the films indicates extensive grain growth and recrystallization phenomena particularly in films of large thickness. The microstructural morphology changes significantly as the thickness decreases. The transport J(c) (at 77 K, B = 0) increases from almost-equal-to 450 A/cm2 for a film thickness of almost-equal-to 65 mum to > 4000 A/cm2 for a reduced thickness of almost-equal-to 3 mum. Possible reasons for this dimensional dependence are discussed.
引用
收藏
页码:337 / 341
页数:5
相关论文
共 17 条
[1]   THEORETICAL ISSUES FOR CRITICAL CURRENTS OF BULK POLYCRYSTALLINE YBA2CU3O7-DELTA SUPERCONDUCTORS [J].
CHEN, L ;
ZHANG, YH .
JOURNAL OF APPLIED PHYSICS, 1989, 66 (04) :1886-1888
[2]   FABRICATION OF YBA2CU3O7-Y SUPERCONDUCTING COATINGS BY ELECTROPHORETIC DEPOSITION [J].
CHU, CT ;
DUNN, B .
APPLIED PHYSICS LETTERS, 1989, 55 (05) :492-494
[3]   PREPARATION OF HIGH-TC Y-BA-CU-O SUPERCONDUCTING FILAMENTS BY SUSPENSION SPINNING METHOD [J].
GOTO, T ;
KADA, M .
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 1987, 26 (09) :L1527-L1528
[4]   FABRICATION OF BI-PB-SR-CA-CU-O SUPERCONDUCTING COMPOSITE WIRES WITH COPPER CORE [J].
GROZAV, AD ;
KONOPKO, LA ;
LEPORDA, NI ;
ONU, MI ;
PANAITOV, GI .
SOLID STATE COMMUNICATIONS, 1990, 76 (08) :1023-1026
[5]   ELECTROPHORETIC DEPOSITION OF HIGHLY TEXTURED YBA2CU3O7-X THICK-FILMS [J].
HEIN, M ;
MAHNER, E ;
MULLER, G ;
PIEL, H ;
PONTO, L ;
BECKS, M ;
KLEIN, U ;
PEINIGER, M .
PHYSICA C, 1989, 162 :111-112
[6]  
HOSHINO K, 1988, ADV SUPERCONDUCTIVIT, P325
[7]   HOW TO COMPARE JC AMONG DIFFERENT-SIZED SAMPLES [J].
IMANAKA, N ;
IMAI, H ;
ADACHI, G .
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 1989, 28 (12) :L2158-L2160
[8]   SELF-FIELD LIMITED CURRENTS IN CERAMIC YBACUO [J].
KLIEM, H ;
WEYERS, A ;
LUTZNER, J .
JOURNAL OF APPLIED PHYSICS, 1991, 69 (03) :1534-1537
[9]   HIGH-TC SUPERCONDUCTOR COATING ON METAL SUBSTRATES BY AN ELECTROPHORETIC TECHNIQUE [J].
MAITI, HS ;
DATTA, S ;
BASU, RN .
JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1989, 72 (09) :1733-1735
[10]   COATING OF SUPERCONDUCTING 123 COMPOUND ON SILVER SUBSTRATE BY ELECTROPHORETIC TECHNIQUE [J].
MAITI, HS ;
BASU, RN ;
DATTA, S .
PHASE TRANSITIONS, 1989, 19 (1-3) :139-145