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Computational Simulations using Time-Dependent Ginzburg–Landau Theory for Nb–Ti-like Microstructures [dataset] Open Access

Simulations based on time-dependent Ginzburg–Landau theory are employed to determine the critical current for a model system which represents a Nb–Ti-like pinning landscape at low drawing strain. The system consists of ellipsoids of normal metal, with dimensions 60ξ × 3ξ × 3ξ, randomly distributed throughout the superconducting bulk with their long axes parallel to the applied current and perpendicular to the field. These preciptates represent the α-Ti elongated precipitates which act as strong pinning centres in Nb–Ti alloys. We present the critical current density as a function of field across the entire range of precipitate volume fractions and find that optimised material in our model system occurs at 32 vol.% ppt., whereas in real materials the optimum occurs at 25 vol.% ppt.

Descriptions

Resource type
Dataset
Contributors
Creator: Charles Haddon 1
Creator: Alexander Blair 2
Creator: Frank Schoofs 2
Creator: Damian Hampshire 1
1 Durham University, United Kingdom
2 Culham Centre for Fusion Energy, United Kingdom
Funder
Engineering and Physical Sciences Research Council
UK Government
Research methods
Other description
Data are in CSV format. The column "volfrac" contains the fraction of the system volume which was occupied by the non-superconducting precipitates. The column "b" contains the reduced field. The column "jc [j0]" contains the critical current in units of j0. The column "fp [j0 Bc2]" contains the pinning force in units of j0 Bc2.
Keyword
Microstructure
Superconductivity
Pins
Metals
Mathematical models
Force
Critical current density (superconductivity)
Subject
Location
Language
Cited in
doi:10.1109/TASC.2022.3156916
Identifier
ark:/32150/r2tm70mv249
doi:10.15128/r2tm70mv249
Rights
Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA)

Publisher
Durham University
Date Created

File Details

Depositor
C. Haddon
Date Uploaded
Date Modified
14 June 2022, 14:06:39
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Characterization
File format: plain (Plain text)
Mime type: text/plain
File size: 20503
Filename: critical_current_data.txt
Original checksum: 2b809cb05ffbd9373d44f8621bdbfffc
Well formed: true
Valid: true
Character set: US-ASCII
Activity of users you follow
User Activity Date
User C. Haddon has updated Computational Simulations using Time-Dependent Ginzburg–Landau Theory for Nb–Ti-like Microstructures [dataset] almost 2 years ago
User N. Syrotiuk has updated Computational Simulations using Time-Dependent Ginzburg–Landau Theory for Nb–Ti-like Microstructures [dataset] almost 2 years ago
User C. Haddon has added a new version of Computational Simulations using Time-Dependent Ginzburg–Landau Theory for Nb–Ti-like Microstructures [dataset] about 2 years ago
User N. Syrotiuk has updated Computational Simulations using Time-Dependent Ginzburg–Landau Theory for Nb–Ti-like Microstructures [dataset] about 2 years ago
User C. Haddon has updated Computational Simulations using Time-Dependent Ginzburg–Landau Theory for Nb–Ti-like Microstructures—Critical current data about 2 years ago
User C. Haddon has updated Computational Simulations using Time-Dependent Ginzburg–Landau Theory for Nb–Ti-like Microstructures—Critical current data about 2 years ago
User C. Haddon has added a new version of Computational Simulations using Time-Dependent Ginzburg–Landau Theory for Nb–Ti-like Microstructures—Critical current data about 2 years ago