EFFECT OF SMALL CHANGES IN COMPOSITION ON THE ELECTRICAL AND STRUCTURAL-PROPERTIES OF YBA2CU3O7 THIN-FILMS

被引：108

作者：

CHEW, NG

GOODYEAR, SW

EDWARDS, JA

SATCHELL, JS

BLENKINSOP, SE

HUMPHREYS, RG

机构：

[1] Royal Signals and Radar Establishment, Malvern

来源：

APPLIED PHYSICS LETTERS | 1990年 / 57卷 / 19期

关键词：

D O I：

10.1063/1.104152

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Epitaxial thin films of YBa2Cu3O7 have been grown in situ by evaporation onto (001) MgO substrates. The composition was varied systematically to investigate the effects of changes in Cu content and Ba/Y ratio on the film properties. The results demonstrate that deviations from stoichiometry at the limit of resolution of most analytic techniques can have a large effect on structural and transport properties, as well as causing marked changes in surface morphology. The best properties (Jc≳3× 106 A/cm2 at 77 K) are only found for a narrow range of compositions, which can be readily identified from the surface morphology.

引用

页码：2016 / 2018

页数：3

共 12 条

[1] COEVAPORATION OF Y-BA-CU-O FILMS IN AN ULTRA HIGH-VACUUM PLANT [J].

EDLINGER, J ;

FISCHER, H ;

KOPRIO, JA ;

PETER, G ;

RAMM, J .

PHYSICA C, 1988, 153 :778-779

[2] PHYSICAL VAPOR-DEPOSITION TECHNIQUES FOR THE GROWTH OF YBA2CU3O7 THIN-FILMS [J].

HUMPHREYS, RG ;

SATCHELL, JS ;

CHEW, NG ;

EDWARDS, JA ;

GOODYEAR, SW ;

BLENKINSOP, SE ;

DOSSER, OD ;

CULLIS, AG .

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 1990, 3 (01) :38-52

[3] NARROW TRACKS IN YBA2CU3O7 THIN-FILMS DEFINED BY LASER ABLATION [J].

HUMPHREYS, RG ;

SATCHELL, JS ;

CHEW, NG ;

EDWARDS, JA .

APPLIED PHYSICS LETTERS, 1989, 54 (01) :75-77

[4] FORMATION OF AS-GROWN YBACUO THIN-FILMS BY RF MAGNETRON SPUTTERING FROM 3 TARGETS [J].

KURODA, K ;

KOJIMA, K ;

TANIOKU, M ;

YOKOYAMA, K ;

HAMANAKA, K .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 1989, 28 (10) :1797-1801

[5] INSITU GROWTH OF Y1BA2CU3O7-X FILMS BY MOLECULAR-BEAM EPITAXY WITH AN ACTIVATED OXYGEN SOURCE [J].

KWO, J ;

HONG, M ;

TREVOR, DJ ;

FLEMING, RM ;

WHITE, AE ;

MANNAERTS, JP ;

FARROW, RC ;

KORTAN, AR ;

SHORT, KT .

PHYSICA C, 1989, 162 :623-624

[6]

MATIJASEVIC V, IN PRESS J MATER RES

[7] INSITU GROWTH OF SUPERCONDUCTING YBACUO USING REACTIVE ELECTRON-BEAM COEVAPORATION [J].

MISSERT, N ;

HAMMOND, R ;

MOOIJ, JE ;

MATIJASEVIC, V ;

ROSENTHAL, P ;

GEBALLE, TH ;

KAPITULNIK, A ;

BEASLEY, MR ;

LADERMAN, SS ;

LU, C ;

GARWIN, E ;

BARTON, R .

IEEE TRANSACTIONS ON MAGNETICS, 1989, 25 (02) :2418-2421

[8]

SCHULZ L, IN PRESS P SPIE, V1187

[9] EFFECT OF SUBSTRATE-TEMPERATURE AND COMPOSITION ON THE CRYSTALLINE STATE OF BA2YCU3O7-DELTA MAGNETRON-SPUTTERED THIN-FILMS [J].

SHIRAKAWA, Y ;

KOBAYASHI, M .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 1989, 28 (08) :L1405-L1407

[10] EPITAXIAL-GROWTH OF YBA2CU3O7-X THIN-FILMS ON (110) SRTIO3 SINGLE-CRYSTALS BY ACTIVATED REACTIVE EVAPORATION [J].

TERASHIMA, T ;

BANDO, Y ;

IIJIMA, K ;

YAMAMOTO, K ;

HIRATA, K .

APPLIED PHYSICS LETTERS, 1988, 53 (22) :2232-2234

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