NDLI: Comparative studies on single crystals and superconducting Bi-(Pb)-Sr-Ca-Cu-O tapes

Content Provider	IEEE Xplore Digital Library
Author	Dou, S.X. Horvat, J. Wang, X.L. Ionescu, M. Liu, H.K. Kusevic, I. Babic, E.
Copyright Year	2002
Abstract	Comparative studies on Bi-2212 single crystal, Bi-2212 tape and 2223 tape have been carried out using AC susceptibility, magnetisation and magnetoresistivity measurements. Bi-2212 crystals have been obtained through a spiral growth mechanism using KCl as flux. Magnetisation measurements show an enhanced flux pinning in the spiral grown crystals compared with crystals grown through a layer-by-layer mechanism. The fish tail effect in M-H loop is attributable to the spirals and screw dislocations in spiral grown Bi-2212 crystals. The irreversibility line for the 2223 tape is positioned at higher temperatures than that for the 2212 tape which is in turn positioned at higher temperatures than that for the 2212 crystals. The pinning potential, U/sub o/, for 2212 tape, determined by using resistance measurements in magnetic fields, is smaller than that of Ag/Bi-2223 tapes but larger than that for 2212 single crystals. These results indicate that the defects induced by mechanical deformation or spiral growth act as pinning centers in Bi-based materials, responsible for the improvement in flux pinning.
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	2219
Ending Page	2222
Page Count	4
File Size	630557
File Format	PDF
ISSN	10518223
Volume Number	7
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1997-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Crystals Spirals Magnetization Flux pinning Temperature Superconducting films Magnetic susceptibility Magnetoresistance Kirchhoff's Law Marine animals
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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Effect on critical current density and irreversibility behaviour of mechanical deformation of Bi-(Pb)-Sr-Ca-Cu-O superconducting tapes

Flux pinning and flux creep in uranium-doped (Bi, Pb)-Sr-Ca-Cu-O superconducting powders after thermal-neutron irradiation

Effect of uranium doping and thermal neutron irradiation on the flux-pinning of silver-clad Bi-Sr-Ca-Cu-O tapes

Solid solubility limit of Bi-Pb-Sr-Ca-Mn-O in Bi-Pb-Sr-Ca-Cu-O superconductors

Microstructural variations with uranium compound doping of Bi-Sr-Ca-Cu-O/Ag superconducting tapes

Critical currents in silver-sheathed ( Bi , Pb ) , Sr , Ca , Cu 3 e ) , o _ Y superconducting tapes

Persistent current density and flux creep in Bi-Sr-Ca-Cu-O/Ag tapes with splayed columnar defects from 0.8 GeV proton irradiation

Growth , structure , and superconducting properties of Bi 2 Sr 2 Ca 2 Cu 3 O 10 and ( Bi , Pb ) 2 Sr 2 Ca 2 Cu 3 O 10-y crystals

Irreversibility lines and pinning force density of aligned (Bi,Pb)/sub 2/Sr/sub 2/Ca/sub 2/Cu/sub 3/O/sub x/ single crystals

Comparative studies on single crystals and superconducting Bi-(Pb)-Sr-Ca-Cu-O tapes

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Effect on critical current density and irreversibility behaviour of mechanical deformation of Bi-(Pb)-Sr-Ca-Cu-O superconducting tapes

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