NDLI: Critical current densities at 77 K and 4.2 K of Bi(2223) tapes prepared by cold and hot deformation

Content Provider	IEEE Xplore Digital Library
Author	Flukiger, R. Grasso, G. Hensel, B. Daumling, M. Jeremie, A. Perin, A. Grivel, J.C. Gladyshevskii, R.
Copyright Year	2002
Abstract	Monofilamentary Bi(2223) tapes have been prepared by the Powder-In-Tube technique using various alternatives for the final thermomechanical processing. In particular, both cold and hot deformation processes were investigated and their critical current densities at 77 K and 4.2 K were measured. For long cold rolled Bi(2223) tapes, transport j/sub c/ values up to 30000 A/cm/sup 2/ were obtained at 77 K and 0T. The value of j/sub c/ was found to increase from 17000 A/cm/sup 2/ at the oxide center to 46000 A/cm/sup 2/ at the borders of the oxide layer. At 4.2 K and 28 T, j/sub c/ values of 45000 and 30000 A/cm/sup 2/ were measured for B parallel and perpendicular to the tape surface, respectively. The j/sub c/ (B) hysteresis was found to disappear at higher fields. The present state of hot deformed Bi(2223) tapes is presented. For rolling temperatures up to 850/spl deg/C, a maximum of j/sub c/ (77 K, 0T)=18000 A/cm/sup 2/ was observed at 800/spl deg/C, j/sub c/ being considerably lower for higher rolling temperatures. The results obtained so far show generally lower j/sub c/ values than for cold rolled tapes. This is essentially due to microcracks and to sausaging effects, which are more pronounced than for cold rolled tapes. For static hot deformation at 800/spl deg/C of short, pressed Bi(2223) tapes an enhancement of j/sub c/ (77 K, 0T) by 20% up to >40000 A/cm/sup 2/ was observed. In addition, the decrease of j/sub c/ for B perpendicular to the tape surface is less pronounced compared to cold deformed tapes.<>
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	1150
Ending Page	1153
Page Count	4
File Size	391112
File Format	PDF
ISSN	10518223
Volume Number	5
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1995-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Critical current density Temperature Laboratories Fabrication Density measurement Current measurement Particle measurements Hysteresis Superconducting films Collaborative work
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Fabrication and characterisation of superconducting Bi-2223/Ag tapes with high critical current densities in km lengths

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

AC losses in multifilamentary Bi-2223/Ag superconducting tapes

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

Critical current densities and voltage-current characteristics in Ag-sheathed Bi-2223 tapes

The Effect of Hot Isostatic Pressure on the Microstructure and Critical Current of Bi-2223/Ag Superconducting Tapes

Novel technique for improving field dependence in Bi-2223 superconducting tapes at 77 K

Effect of cryogenic deformation on microstructure and critical current density in Ag/Bi-2223 tapes

High critical current densities in long lengths of mono- and multifilamentary Ag-sheathed Bi(2223) tapes

Critical current densities at 77 K and 4.2 K of Bi(2223) tapes prepared by cold and hot deformation

Similar Documents

Fabrication and characterisation of superconducting Bi-2223/Ag tapes with high critical current densities in km lengths

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

AC losses in multifilamentary Bi-2223/Ag superconducting tapes

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

Critical current densities and voltage-current characteristics in Ag-sheathed Bi-2223 tapes

The Effect of Hot Isostatic Pressure on the Microstructure and Critical Current of Bi-2223/Ag Superconducting Tapes

Novel technique for improving field dependence in Bi-2223 superconducting tapes at 77 K

Effect of cryogenic deformation on microstructure and critical current density in Ag/Bi-2223 tapes

High critical current densities in long lengths of mono- and multifilamentary Ag-sheathed Bi(2223) tapes

Critical current densities at 77 K and 4.2 K of Bi(2223) tapes prepared by cold and hot deformation