NDLI: Magnetic Field Mapping Above the Superconducting Tape With Ni-Covered Edges

Content Provider	IEEE Xplore Digital Library
Author	Solovyov, M. Vojenciak, M. Gomory, F.
Copyright Year	2002
Abstract	Covering the edges of a Bi-2223/Ag tape conductor by a layer of soft ferromagnetic material has positive impact on its two basic performance characteristics in low magnetic fields: the critical current is improved by ~20%, and both the magnetization and transport AC loss are reduced. Reasonable theoretical prediction of the critical current in the tape is obtained by a numerical finite-element method: the whole superconducting portion is saturated by the critical current density assumed to be anisotropic and dependent on the magnetic field. However, for the prediction of AC loss the intermediate states with partial saturation of superconductor are also significant. We studied experimentally the development of magnetic field above a common multifilamentary Bi-2223/Ag tape with edges covered by nickel during stepwise change of the transport DC current. Indirect information about the distribution of electrical current and hence the process of magnetic flux penetration and dissipation at changing the value of current can be extracted from these experiments.
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	3049
Ending Page	3052
Page Count	4
File Size	604433
File Format	PDF
ISSN	10518223
Volume Number	19
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Magnetic fields Superconducting films Critical current Multifilamentary superconductors Conducting materials Magnetic materials Performance loss Magnetization Finite element methods Critical current density Ni-covering Bi-2223/Ag Hall-probe magnetic field mapping
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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Angular dependence of AC transport losses in multifilamentary Bi-2223/Ag tape on external DC magnetic fields

The Influence of Tape Arrangements on the Critical Current of Bi-2223 Superconducting Current Leads

The Characteristics of Bi-2223/Ag Conductor for High Field Application

Filament bridging and critical current density variation in the cross-section of multifilamentary Bi-2223/Ag tapes

Distribution of Magnetic Field Inside the Winding of a BSCCO Coil

Enhanced Current-Carrying Capacity of Three-Layer Cable Composed of Bi-2223 Tapes Using the Longitudinal Field Effect

Critical current density of Bi-2223/Ag multifilamentary tapes from 4.2 K up to 90 K in magnetic fields up to 23 T

Current carrying capability and texture of Ag/Bi-2223 multifilamentary tapes determined from remanent magnetization measurements

Electrical properties of multifilamentary Bi(Pb)-2223/Ag tapes

Magnetic Field Mapping Above the Superconducting Tape With Ni-Covered Edges

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Angular dependence of AC transport losses in multifilamentary Bi-2223/Ag tape on external DC magnetic fields

The Influence of Tape Arrangements on the Critical Current of Bi-2223 Superconducting Current Leads

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Filament bridging and critical current density variation in the cross-section of multifilamentary Bi-2223/Ag tapes

Distribution of Magnetic Field Inside the Winding of a BSCCO Coil

Enhanced Current-Carrying Capacity of Three-Layer Cable Composed of Bi-2223 Tapes Using the Longitudinal Field Effect

Critical current density of Bi-2223/Ag multifilamentary tapes from 4.2 K up to 90 K in magnetic fields up to 23 T

Current carrying capability and texture of Ag/Bi-2223 multifilamentary tapes determined from remanent magnetization measurements

Electrical properties of multifilamentary Bi(Pb)-2223/Ag tapes

Magnetic Field Mapping Above the Superconducting Tape With Ni-Covered Edges