Local magnetization measurements on Bi2Sr2Ca2Cu3O10 tapes

Y. Radzyner; Y. Abulafia; Y. Yeshurun; T. Staiger; G. Fuchs

doi:10.1016/s0921-4534(98)00514-0

Local magnetization measurements on Bi₂Sr₂Ca₂Cu₃O₁₀ tapes

Y. Radzyner, Y. Abulafia, Y. Yeshurun, T. Staiger, G. Fuchs

Department of Physics

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

5 Scopus citations

Abstract

Global transport measurements and local Hall-probe array measurements of a section of silver clad BSCCO tape, are reported. Transport measurements are in good agreement with the 'brick wall' model. The induction profiles obtained from magnetic measurements agree with the assumption of a uniform bulk current at low (40-60 K) temperatures. At higher temperatures and relatively high fields (700 G and up) local measurements seem to reveal the existence of surface currents. These currents are the result of small current loops, flowing within the grains, which result in a net current only at the edges of the sample. Thus, the local magnetic measurements do not agree with global transport ones, and we contend that the 'brick wall' model aptly describes the flow of transport currents, but fails to describe the flow of currents induced by an external magnetic field.

Original language	English
Pages (from-to)	165-176
Number of pages	12
Journal	Physica C: Superconductivity and its Applications
Volume	307
Issue number	3-4
DOIs	https://doi.org/10.1016/s0921-4534(98)00514-0
State	Published - 20 Oct 1998

Bibliographical note

Funding Information:
We would like to thank Eli Zeldov for discussions and H. Shtrikman for growing the GaAs heterostructures. This research was partially supported by the Israel Science Foundations, by the Heinrich Hertz Minerva Center for High Temperature Superconductivity and by Bundesministerium für Bildung, Wissenschaft, Forschung und Technologie. Y.Y. acknowledges a support from the Ministry of Energy and Infrastructure and from the Ministry of Science and Technology.

Funding

We would like to thank Eli Zeldov for discussions and H. Shtrikman for growing the GaAs heterostructures. This research was partially supported by the Israel Science Foundations, by the Heinrich Hertz Minerva Center for High Temperature Superconductivity and by Bundesministerium für Bildung, Wissenschaft, Forschung und Technologie. Y.Y. acknowledges a support from the Ministry of Energy and Infrastructure and from the Ministry of Science and Technology.

Funders	Funder number
Heinrich Hertz Minerva Center
Israel Science Foundations
Ministry of Energy and Infrastructure
Ministerio de Ciencia y Tecnología
Bundesministerium für Bildung, Wissenschaft, Forschung und Technologie

Keywords

Critical current density
Flux creep
Granular material
Local measurements
Magnetic measurements
Weak links

Access to Document

10.1016/s0921-4534(98)00514-0

Cite this

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title = "Local magnetization measurements on Bi2Sr2Ca2Cu3O10 tapes",

abstract = "Global transport measurements and local Hall-probe array measurements of a section of silver clad BSCCO tape, are reported. Transport measurements are in good agreement with the 'brick wall' model. The induction profiles obtained from magnetic measurements agree with the assumption of a uniform bulk current at low (40-60 K) temperatures. At higher temperatures and relatively high fields (700 G and up) local measurements seem to reveal the existence of surface currents. These currents are the result of small current loops, flowing within the grains, which result in a net current only at the edges of the sample. Thus, the local magnetic measurements do not agree with global transport ones, and we contend that the 'brick wall' model aptly describes the flow of transport currents, but fails to describe the flow of currents induced by an external magnetic field.",

keywords = "Critical current density, Flux creep, Granular material, Local measurements, Magnetic measurements, Weak links",

author = "Y. Radzyner and Y. Abulafia and Y. Yeshurun and T. Staiger and G. Fuchs",

note = "Funding Information: We would like to thank Eli Zeldov for discussions and H. Shtrikman for growing the GaAs heterostructures. This research was partially supported by the Israel Science Foundations, by the Heinrich Hertz Minerva Center for High Temperature Superconductivity and by Bundesministerium f{\"u}r Bildung, Wissenschaft, Forschung und Technologie. Y.Y. acknowledges a support from the Ministry of Energy and Infrastructure and from the Ministry of Science and Technology.",

year = "1998",

month = oct,

day = "20",

doi = "10.1016/s0921-4534(98)00514-0",

language = "אנגלית",

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T1 - Local magnetization measurements on Bi2Sr2Ca2Cu3O10 tapes

AU - Radzyner, Y.

AU - Abulafia, Y.

AU - Yeshurun, Y.

AU - Staiger, T.

AU - Fuchs, G.

N1 - Funding Information: We would like to thank Eli Zeldov for discussions and H. Shtrikman for growing the GaAs heterostructures. This research was partially supported by the Israel Science Foundations, by the Heinrich Hertz Minerva Center for High Temperature Superconductivity and by Bundesministerium für Bildung, Wissenschaft, Forschung und Technologie. Y.Y. acknowledges a support from the Ministry of Energy and Infrastructure and from the Ministry of Science and Technology.

PY - 1998/10/20

Y1 - 1998/10/20

N2 - Global transport measurements and local Hall-probe array measurements of a section of silver clad BSCCO tape, are reported. Transport measurements are in good agreement with the 'brick wall' model. The induction profiles obtained from magnetic measurements agree with the assumption of a uniform bulk current at low (40-60 K) temperatures. At higher temperatures and relatively high fields (700 G and up) local measurements seem to reveal the existence of surface currents. These currents are the result of small current loops, flowing within the grains, which result in a net current only at the edges of the sample. Thus, the local magnetic measurements do not agree with global transport ones, and we contend that the 'brick wall' model aptly describes the flow of transport currents, but fails to describe the flow of currents induced by an external magnetic field.

AB - Global transport measurements and local Hall-probe array measurements of a section of silver clad BSCCO tape, are reported. Transport measurements are in good agreement with the 'brick wall' model. The induction profiles obtained from magnetic measurements agree with the assumption of a uniform bulk current at low (40-60 K) temperatures. At higher temperatures and relatively high fields (700 G and up) local measurements seem to reveal the existence of surface currents. These currents are the result of small current loops, flowing within the grains, which result in a net current only at the edges of the sample. Thus, the local magnetic measurements do not agree with global transport ones, and we contend that the 'brick wall' model aptly describes the flow of transport currents, but fails to describe the flow of currents induced by an external magnetic field.

KW - Critical current density

KW - Flux creep

KW - Granular material

KW - Local measurements

KW - Magnetic measurements

KW - Weak links

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JO - Physica C: Superconductivity and its Applications

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IS - 3-4

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Local magnetization measurements on Bi₂Sr₂Ca₂Cu₃O₁₀ tapes

Abstract

Bibliographical note

Funding

Keywords

Access to Document

Other files and links

Fingerprint

Local Hall Probe Magnetometer

Cite this

Local magnetization measurements on Bi2Sr2Ca2Cu3O10 tapes

Abstract

Bibliographical note

Funding

Keywords

Access to Document

Other files and links

Fingerprint

Equipment

Local Hall Probe Magnetometer

Cite this

Local magnetization measurements on Bi₂Sr₂Ca₂Cu₃O₁₀ tapes