EFFECTS OF INTERGRAIN AND INTRAGRAIN CURRENTS ON FLUX PROFILE IN ANTIGRANULOCYTES SUPERCONDUCTING CERAMICS

被引：14

作者：

GODELAINE, PA ^{[1
]}

AUSLOOS, M ^{[1
]}

机构：

[1] UNIV LIEGE,SUPRAS,INST PHYS,B-4000 LIEGE,BELGIUM

来源：

SOLID STATE COMMUNICATIONS | 1990年 / 76卷 / 06期

关键词：

D O I：

10.1016/0038-1098(90)90627-N

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We present generalizations of Bean critical state model to take into account granular effects as in high critical temperature superconductor ceramics. Both intragrain and intergrain critical current effect are discussed as they modify the "flux profile" determined by AC susceptibility measurements. We also examine the effect of Josephson weak links on the flux profile. We show how to obtain these electrical currents from the data together with the "granular fraction" and the flux penetration depth. Data on Bi0.85Pb0.15SrCa1.2Cu2O 6 sample is shown to be fitted to our theoretical expressions. © 1990.

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页码：785 / 788

页数：4

相关论文

共 9 条

[1] MAGNETIZATION OF HIGH-FIELD SUPERCONDUCTORS [J].

BEAN, CP .

REVIEWS OF MODERN PHYSICS, 1964, 36 (1P1) :31-+

[2] MAGNETIZATION OF HARD SUPERCONDUCTORS [J].

BEAN, CP .

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

[3] RESPONSE OF PINNED FLUX VORTICES TO LOW-FREQUENCY FIELDS [J].

CAMPBELL, AM .

JOURNAL OF PHYSICS PART C SOLID STATE PHYSICS, 1969, 2 (08) :1492-&

[4] NEW CRITICAL-STATE MODEL FOR CRITICAL CURRENTS IN CERAMIC HIGH-TC SUPERCONDUCTORS [J].

DERSCH, H ;

BLATTER, G .

PHYSICAL REVIEW B, 1988, 38 (16) :11391-11404

[5] WEAK LINK PROBLEM AND INTRAGRAIN CURRENT-DENSITY IN POLYCRYSTALLINE BI1CA1SR1CU2OX AND TL2CA2BA2CU3O10 [J].

KUPFER, H ;

GREEN, SM ;

JIANG, C ;

YU, M ;

LUO, HL ;

MEIERHIRMER, R ;

POLITIS, C .

ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1988, 71 (01) :63-67

[6] INTRAGRAIN JUNCTIONS IN YBA2CU3O7-X CERAMICS AND SINGLE-CRYSTALS [J].

KUPFER, H ;

APFELSTEDT, I ;

FLUKIGER, R ;

KELLER, C ;

MEIERHIRMER, R ;

RUNTSCH, B ;

TUROWSKI, A ;

WIECH, U ;

WOLF, T .

CRYOGENICS, 1989, 29 (3A) :268-280

[7] INVESTIGATION OF INTERGRAIN AND INTRAGRAIN CRITICAL CURRENTS IN HIGH-TC CERAMIC SUPERCONDUCTORS [J].

KUPFER, H ;

APFELSTEDT, I ;

FLUKIGER, R ;

KELLER, C ;

MEIERHIRMER, R ;

RUNTSCH, B ;

TUROWSKI, A ;

WIECH, U ;

WOLF, T .

CRYOGENICS, 1988, 28 (10) :650-660

[8] CRITICAL CURRENT AND UPPER CRITICAL-FIELD OF SINTERED AND POWDERED SUPERCONDUCTING YBA2CU3O7 [J].

KUPFER, H ;

APFELSTEDT, I ;

SCHAUER, W ;

FLUKIGER, R ;

MEIERHIRMER, R ;

WUHL, H .

ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1987, 69 (2-3) :159-166

[9] MAGNETIC-FIELD PROFILES IN TYPE-II SUPERCONDUCTORS WITH PINNING USING A NEW AC TECHNIQUE [J].

ROLLINS, RW ;

KUPFER, H ;

GEY, W .

JOURNAL OF APPLIED PHYSICS, 1974, 45 (12) :5392-5398