MAGNETIC FLUX DISTRIBUTION IN POLYCRYSTALLINE Bi,Pb-Sr-Ca-Cu-O SUPERCONDUCTORS IN A CYCLIC STATE

被引：5

作者：

Paasi, J. ^{[2
]}

Polak, M. ^{[1
]}

Lahtinen, M. ^{[1
]}

Eriksson, J. -T.

Plechacek, V. ^{[3
]}

机构：

[1] Tampere Univ Technol, Lab Elect & Magnetism, POB 629, SF-33101 Tampere, Finland

[2] Slovak Acad Sci, Inst Elect Engn, Bratislava 84239, Slovakia

[3] Czechoslovak Acad Sci, Inst Phys, CS-16200 Prague 6, Czech Republic

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 1993年 / 3卷 / 01期

关键词：

D O I：

10.1109/77.233642

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We have studied magnetic flux distribution in polycrystalline (Bi,Pb)(2)Sr2Ca2Cu3O10+x superconductors at 77 K at different stages of an external magnetic field cycle using a movable miniature Hall sensor. The measured magnetic field profiles are compared to profiles achieved by numerical field calculations. The existence of both inter- and intragranular currents causes deviations to the field profiles predicted by classical critical state models leading to incorrect critical current density estimations, when using standard magnetization measurements.

引用

页码：1378 / 1381

页数：4

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