NDLI: Experimental study of flux pinning in NbN films and multilayers: ultimate limits on critical currents in superconductors

Content Provider	IEEE Xplore Digital Library
Author	Gray, K.E. Kampwirth, R.T. Capone II, D.W. Murdock, J.M.
Copyright Year	1965
Abstract	A flux-pinning model is presented which predicts the maximum critical current density attainable in superconductors. That such a limit must exist comes from the realization that flux pinning is strongest in regions of weak superconductivity, but these regions cannot carry a large supercurrent. Since the same regions within the superconductor cannot be used for both pinning and supercurrent conduction, there must be an optimum mix, leading to a maximum J/sub c/. Measurements on films and multilayers of NbN have verified many details of the model including anisotropy effects and a strong reduction in J/sub c/ for defect spacings smaller than the flux core diameter. In an optimized multilayer the pinning force reached approximately 22% of the theoretical maximum. The implications of these results on the practical applications of NbN films and on the maximum critical current density in the high-temperature oxide superconductors are also discussed.<>
Sponsorship	IEEE Magnetics Society
Starting Page	2060
Ending Page	2067
Page Count	8
File Size	865561
File Format	PDF
ISSN	00189464
Volume Number	25
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1989-03-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Flux pinning Nonhomogeneous media Critical current Superconducting films Superconductivity High temperature superconductors Critical current density Insulation Shearing Grain boundaries
Content Type	Text
Resource Type	Article
Subject	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

Flux pinning in high-current-density superconductors

Flux pinning at grain boundaries in liquid phase sintered YBCO

Critical currents and pinning mechanisms in Chevrel-phase superconductors: materials science issues

Critical Current and Flux Pinning Characteristics in Sr_0.6K_0.4Fe₂As₂ Superconducting Tapes

Superconducting properties and critical current density of Nb-Ti/Ti multilayers

Development of MgB₂-Based Bulk Supermagnets

Practical Magnetic Pinning in YBCO

Quantitative Description of Critical Current Density in YBCO Films and Multilayers

Periodic artificial pinning centers for high critical current density of tape conductor

Experimental study of flux pinning in NbN films and multilayers: ultimate limits on critical currents in superconductors

Similar Documents

Flux pinning in high-current-density superconductors

Flux pinning at grain boundaries in liquid phase sintered YBCO

Critical currents and pinning mechanisms in Chevrel-phase superconductors: materials science issues

Critical Current and Flux Pinning Characteristics in Sr0.6K0.4Fe2As2 Superconducting Tapes

Superconducting properties and critical current density of Nb-Ti/Ti multilayers

Development of MgB2-Based Bulk Supermagnets

Practical Magnetic Pinning in YBCO

Quantitative Description of Critical Current Density in YBCO Films and Multilayers

Periodic artificial pinning centers for high critical current density of tape conductor

Experimental study of flux pinning in NbN films and multilayers: ultimate limits on critical currents in superconductors

Critical Current and Flux Pinning Characteristics in Sr_0.6K_0.4Fe₂As₂ Superconducting Tapes

Development of MgB₂-Based Bulk Supermagnets