THE EFFECT OF SAMPLE SHAPE ON THE MEASUREMENT OF INTERGRAIN CURRENTS IN YBACUO

被引：6

作者：

CAMPBELL, AM

BLUNT, FJ

机构：

[1] IRC in Superconductivity, Cambridge

来源：

SUPERCONDUCTOR SCIENCE & TECHNOLOGY | 1990年 / 3卷 / 09期

关键词：

D O I：

10.1088/0953-2048/3/9/004

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The critical current density in sintered YBCO was found to vary by up to a factor of three in sintered material as the angle between the sample and the applied field was varied. Currents were always perpendicular to the field and the effect is attributed to the demagnetising effect of the sample. By defining H as the external field equilibrium with a flux density B the authors use classical electromagnetism to calculate the demagnetising effect. When Jc is plotted as a function of H or B in the material, rather than the external field, the anisotropy disappears. © 1990 IOP Publishing Ltd.

引用

页码：450 / 453

页数：4

共 9 条

[1]

[Anonymous], 2002, ELECTRODYNAMICS CONT

[2]

BROWN WF, MAGNETOSTATIC PRINCI

[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]

EVETTS JE, 1966, 10 P INT C LOW TEM B, V2, P33

[5] AC MAGNETIZATION OF HIGH-TC SUPERCONDUCTORS AT LOW SUPERIMPOSED DC MAGNETIC-FIELDS [J].

GOMORY, F ;

TAKACS, S ;

LOBOTKA, P ;

FROHLICH, K ;

PLECHACEK, V .

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 1989, 160 (01) :1-7

[6] MACROSCOPIC FIELD EQUATIONS FOR METALS IN EQUILIBRIUM [J].

JOSEPHSON, BD .

PHYSICAL REVIEW, 1966, 152 (01) :211-+

[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] JOSEPHSON VORTICES AND FLUX-PENETRATION IN HIGH-TEMPERATURE SUPERCONDUCTORS [J].

MULLER, KH ;

MACFARLANE, JC ;

DRIVER, R .

PHYSICA C, 1989, 158 (1-2) :69-75

[9] DEMAGNETIZING FACTORS OF THE GENERAL ELLIPSOID [J].

OSBORN, JA .

PHYSICAL REVIEW, 1945, 67 (11-1) :351-357

← 1 →