Magnetic Flux Distribution in Polycrystalline Bi,Pb-Sr-Ca-Cu-0 Superconductors in a Cyclic State

J. Paasi; M. Polak; M. Lahtinen; J. T. Eriksson; V. Plechacek

doi:10.1109/77.233642

Magnetic Flux Distribution in Polycrystalline Bi,Pb-Sr-Ca-Cu-0 Superconductors in a Cyclic State

J. Paasi, M. Polak, M. Lahtinen, J. T. Eriksson, V. Plechacek

Not published at VTT

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Abstract

We have studied magnetic flux distribution in polycrystalline (Bi,Pb)2Sr2Ca2Cu3O10+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.

Original language	English
Pages (from-to)	1378-1381
Number of pages	4
Journal	IEEE Transactions on Applied Superconductivity
Volume	3
Issue number	1
DOIs	https://doi.org/10.1109/77.233642
Publication status	Published - Mar 1993
MoE publication type	A1 Journal article-refereed

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abstract = "We have studied magnetic flux distribution in polycrystalline (Bi,Pb)2Sr2Ca2Cu3O10+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.",

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Magnetic Flux Distribution in Polycrystalline Bi,Pb-Sr-Ca-Cu-0 Superconductors in a Cyclic State

Abstract

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