Influences of inter- and intragrain current systems on the total magnetization in (Bi,Pb)2Sr2Ca2Cu3O10+x superconductors

Jaakko A.J. Paasi; Markku J. Lahtinen; Vladimir Plecháček

doi:10.1016/0921-4534(94)02401-4

Influences of inter- and intragrain current systems on the total magnetization in (Bi,Pb)₂Sr₂Ca₂Cu₃O_10+x superconductors

Jaakko A.J. Paasi^*
, Markku J. Lahtinen
, Vladimir Plecháček

^*Corresponding author for this work

Not published at VTT

Tampere University of Technology (TUT)
Czech Academy of Sciences

Research output: Contribution to journal › Article › Scientific › peer-review

11 Citations (Scopus)

Abstract

In this study we examine the influences of inter- and intragrain current systems on the total magnetic flux distribution (magnetization) and its dynamics in polycrystalline (Bi,Pb)₂Sr₂Ca₂Cu₃O_10+x superconductors at 77 K. For measurement taking we used a movable miniature Hall sensor. The total magnetic behavior was dominated by the magnetization of the intergrain system if the transport (intergrain) J_c of the samples was sufficiently high. The influences of intragrain magnetization were clearly visible and distinguishable but were of minor importance because of the domination of the grain magnetization equilibrium component. The relaxation of the intergrain screening currents was found to exhibit a strong dependence on the magnetic history.

Original language	English
Pages (from-to)	267-276
Number of pages	10
Journal	Physica C: Superconductivity and its Applications
Volume	242
Issue number	3-4
DOIs	https://doi.org/10.1016/0921-4534(94)02401-4
Publication status	Published - 10 Feb 1995
MoE publication type	A1 Journal article-refereed

Funding

The authors thank M. Pol~ik for his suggestion of the subject. The work was partially supported by NEMO 2 (Advanced Energy Systems National Programme of Finland).

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abstract = "In this study we examine the influences of inter- and intragrain current systems on the total magnetic flux distribution (magnetization) and its dynamics in polycrystalline (Bi,Pb)2Sr2Ca2Cu3O10+x superconductors at 77 K. For measurement taking we used a movable miniature Hall sensor. The total magnetic behavior was dominated by the magnetization of the intergrain system if the transport (intergrain) Jc of the samples was sufficiently high. The influences of intragrain magnetization were clearly visible and distinguishable but were of minor importance because of the domination of the grain magnetization equilibrium component. The relaxation of the intergrain screening currents was found to exhibit a strong dependence on the magnetic history.",

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AU - Plecháček, Vladimir

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AB - In this study we examine the influences of inter- and intragrain current systems on the total magnetic flux distribution (magnetization) and its dynamics in polycrystalline (Bi,Pb)2Sr2Ca2Cu3O10+x superconductors at 77 K. For measurement taking we used a movable miniature Hall sensor. The total magnetic behavior was dominated by the magnetization of the intergrain system if the transport (intergrain) Jc of the samples was sufficiently high. The influences of intragrain magnetization were clearly visible and distinguishable but were of minor importance because of the domination of the grain magnetization equilibrium component. The relaxation of the intergrain screening currents was found to exhibit a strong dependence on the magnetic history.

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Influences of inter- and intragrain current systems on the total magnetization in (Bi,Pb)₂Sr₂Ca₂Cu₃O_10+x superconductors

Abstract

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