LARGE CRITICAL CURRENTS AND IMPROVED EPITAXY OF LASER-ABLATED AG-DOPED YBA2CU3O7-DELTA THIN-FILMS

被引：83

作者：

KUMAR, D ^{[1
]}

SHARON, M ^{[1
]}

PINTO, R ^{[1
]}

APTE, PR ^{[1
]}

PAI, SP ^{[1
]}

PURANDARE, SC ^{[1
]}

GUPTA, LC ^{[1
]}

VIJAYARAGHAVAN, R ^{[1
]}

机构：

[1] TATA INST FUNDAMENTAL RES,BOMBAY 400005,INDIA

来源：

APPLIED PHYSICS LETTERS | 1993年 / 62卷 / 26期

关键词：

D O I：

10.1063/1.109014

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Microstructure and critical current densities of laser ablated YBa2Cu3O7-delta thin films doped with 2-20 wt. % Ag have been studied. A critical current density as high as 1.4 X 10(7) A cm-2 at 77 K has been realized on [100] SrTiO3 substrates with YBaCuO films doped with 5 wt. % Ag which has been found to be the optimum. Evidence indicates that the improved microstructure and epitaxy which is a consequence of grain enlargement and alignment caused by Ag is responsible for the high values of critical currents observed.

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页码：3522 / 3524

页数：3

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共 14 条

[1] CRITICAL CURRENT MEASUREMENTS IN SINGLE-CRYSTALS AND SINGLE-GRAIN BOUNDARIES IN YBA2CU3O7 FILMS [J].

CHAUDHARI, P ;

DIMOS, D ;

MANNHART, J .

IBM JOURNAL OF RESEARCH AND DEVELOPMENT, 1989, 33 (03) :299-306

[2] SUPERCURRENTS IN LEAD-COPPER-LEAD SANDWICHES [J].

CLARKE, J .

PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1969, 308 (1495) :447-&

[3] BOUNDARY EFFECTS IN SUPERCONDUCTORS [J].

DEGENNES, PG .

REVIEWS OF MODERN PHYSICS, 1964, 36 (1P1) :225-+

[4] FLUX PINNING BY A-AXIS GRAINS IN C-AXIS-ORIENTED Y-BA-CU-O FILMS [J].

FUKE, H ;

YOSHINO, H ;

YAMAZAKI, M ;

THANH, TD ;

NAKAMURA, S ;

ANDO, K ;

KOBAYASHI, Y .

APPLIED PHYSICS LETTERS, 1992, 60 (21) :2686-2688

[5] RELATION BETWEEN CRITICAL CURRENT DENSITIES AND EPITAXY OF YBA2CU3O7 THIN-FILMS ON MGO(100) AND SRTIO3(100) [J].

KROMANN, R ;

BILDESORENSEN, JB ;

DEREUS, R ;

ANDERSEN, NH ;

VASE, P ;

FRELTOFT, T .

JOURNAL OF APPLIED PHYSICS, 1992, 71 (07) :3419-3426

[6] TRANSPORT CRITICAL CURRENT-DENSITY AND ELECTRICAL CHARACTERIZATION OF PATTERNED HIGH-TC SUPERCONDUCTING THIN-FILMS PREPARED BY METALLOORGANIC DECOMPOSITION [J].

LUBBERTS, G .

JOURNAL OF APPLIED PHYSICS, 1990, 68 (02) :688-694

[7] CRITICAL CURRENTS IN [001] GRAINS AND ACROSS THEIR TILT BOUNDARIES IN YBA2CU3O7 FILMS [J].

MANNHART, J ;

CHAUDHARI, P ;

DIMOS, D ;

TSUEI, CC ;

MCGUIRE, TR .

PHYSICAL REVIEW LETTERS, 1988, 61 (21) :2476-2479

[8] CURRENT TRANSPORT IN HIGH-TC POLYCRYSTALLINE FILMS OF Y-BA-CU-O [J].

OGALE, SB ;

DIJKKAMP, D ;

VENKATESAN, T ;

WU, XD ;

INAM, A .

PHYSICAL REVIEW B, 1987, 36 (13) :7210-7213

[9] OPTIMIZATION OF KRF LASER ABLATION PARAMETERS FOR INSITU GROWTH OF Y1BA2CU3O7-DELTA THIN-FILMS [J].

PINTO, R ;

PAI, SP ;

DSOUZA, CP ;

GUPTA, LC ;

VIJAYARAGHAVAN, R ;

KUMAR, D ;

SHARON, M .

PHYSICA C, 1992, 196 (3-4) :264-270

[10] FLUX CREEP AND TRANSPORT CRITICAL CURRENT-DENSITY IN HIGH-TC SUPERCONDUCTORS [J].

SAVVIDES, N .

PHYSICA C, 1990, 165 (5-6) :371-376