LOCAL MAGNETIC-FIELD DISTRIBUTION IN POLYCRYSTALLINE YBA2CU3O7 AND ITS INFLUENCE ON BULK CRITICAL CURRENTS

被引：19

作者：

ASKEW, TR

FLIPPEN, RB

LEARY, KJ

KUNCHUR, MN

机构：

[1] DUPONT CO, JACKSON LAB, DEEP WATER, NJ 08023 USA

[2] UNIV VIRGINIA, DEPT PHYS, CHARLOTTESVILLE, VA 22901 USA

[3] DUPONT CO, DEPT DEV, WILMINGTON, DE 19880 USA

来源：

JOURNAL OF MATERIALS RESEARCH | 1991年 / 6卷 / 06期

关键词：

D O I：

10.1557/JMR.1991.1135

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The transport critical current density J(c) has been measured in high quality polycrystalline YBa2Cu3O7 samples made from extruded preforms. The hysteretic response of J(c) to applied magnetic fields was studied as a function of temperature (77-87 K) and sample morphology for various field sweeps in the 0-5 KOe range. A variety of samples show a basic J(c) approximately H(-n) behavior where n depends on temperature, but is independent of the other variables. A simple model of the local magnetic field distribution is presented and compared to the data, and the theoretical implications of the power law behavior are considered.

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页码：1135 / 1147

页数：13

相关论文

共 66 条

[1] CRITICAL CURRENTS OF SINTERED AND MELT-TEXTURED YBA2CU3OX [J].

ALFORD, NM ;

BIRCHALL, JD ;

CLEGG, WJ ;

KENDALL, K .

JOURNAL OF APPLIED PHYSICS, 1989, 65 (07) :2856-2858

[2] MICROSTRUCTURAL AND MAGNETIZATION STUDIES OF SINTERED AND MELT-TEXTURED Y-BA-CU-O [J].

ALFORD, NM ;

BUTTON, TW ;

GOUGH, CE ;

WELLHOFER, F ;

OCONNOR, DA ;

COLCLOUGH, MS ;

POLLARD, RJ ;

MCCARTNEY, DG .

JOURNAL OF APPLIED PHYSICS, 1989, 66 (12) :5930-5934

[3] THE EFFECT OF DENSITY ON CRITICAL CURRENT AND OXYGEN STOICHIOMETRY OF YBA2CU3OX SUPERCONDUCTORS [J].

ALFORD, NM ;

CLEGG, WJ ;

HARMER, MA ;

BIRCHALL, JD ;

KENDALL, K ;

JONES, DH .

NATURE, 1988, 332 (6159) :58-59

[4] PHYSICAL AND MECHANICAL-PROPERTIES OF YBA2CU3O7-DELTA SUPERCONDUCTORS [J].

ALFORD, NM ;

BIRCHALL, JD ;

CLEGG, WJ ;

HARMER, MA ;

KENDALL, K ;

JONES, DH .

JOURNAL OF MATERIALS SCIENCE, 1988, 23 (03) :761-768

[5] HE-4 CRYOSTAT WITH SAMPLE INTERLOCK FOR ANALYSIS OF SUPERCONDUCTING MATERIALS AND DEVICES [J].

ASKEW, TR ;

FLIPPEN, RB ;

SWARTZ, ET .

REVIEW OF SCIENTIFIC INSTRUMENTS, 1990, 61 (03) :993-997

[6]

ASKEW TR, 1990, MATER RES SOC SYMP P, V169, P939

[7] MAGNETIZATION OF HARD SUPERCONDUCTORS [J].

BEAN, CP .

PHYSICAL REVIEW LETTERS, 1962, 8 (06) :250-+

[8] POSSIBLE HIGH-TC SUPERCONDUCTIVITY IN THE BA-LA-CU-O SYSTEM [J].

BEDNORZ, JG ;

MULLER, KA .

ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1986, 64 (02) :189-193

[9] DIRECT MEASUREMENT OF THE SUPERCONDUCTING PROPERTIES OF SINGLE GRAIN-BOUNDARIES IN Y1BA2CU3O7-DELTA [J].

CHAUDHARI, P ;

MANNHART, J ;

DIMOS, D ;

TSUEI, CC ;

CHI, J ;

OPRYSKO, MM ;

SCHEUERMANN, M .

PHYSICAL REVIEW LETTERS, 1988, 60 (16) :1653-1656

[10] FLUX-CREEP-LIMITED CRITICAL CURRENTS IN YBA2CU3O7-DELTA CERAMICS [J].

DAI, U ;

HESS, N ;

TESSLER, LR ;

DEUTSCHER, G ;

VETTER, G ;

QUEYROUX, F ;

BONTEMPS, N ;

MAHOUM, R ;

LAGUES, M ;

MOCAER, P .

APPLIED PHYSICS LETTERS, 1989, 55 (11) :1135-1137

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