Irreversibility temperatures of Nb sub 3 Sn and Nb-Ti

Journal Article · Mon Apr 01 04:00:00 EST 1991 · Physical Review Letters; (USA)

DOI:https://doi.org/10.1103/PhysRevLett.66.1777· OSTI ID:5492946

Suenaga, M; Ghosh, A K; Xu, Y; Welch, D O ^[1]

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1. Materials Science Division, Department of Applied Science, Brookhaven National Laboratory, Upton, New York 11973 (USA)

For fine multifilamentary Nb{sub 3}Sn and Nb-Ti wires, it was found that there exists a surprisingly large temperature region (e.g., {similar to}1 and 0.5 K at 2 T for a Nb{sub 3}Sn and Nb-Ti wire, respectively) below the mean-field critical-magnetic-field line {ital H}{sub {ital c}2}({ital T}) where the magnetization is reversible during a cycle of warming and cooling. The magnetic-field dependence of the lower boundary of this temperature region, i.e., the irreversibility temperature {ital T}{sub {ital r}}({ital H}), was shown to follow theoretical predictions for flux-lattice melting based on an analysis of thermally induced flux-line fluctuations calculated with nonlocal lattice elasticity and the Lindemann melting criterion.

• DOE Contract Number: AC02-76CH00016
• OSTI ID: 5492946
• Journal Information: Physical Review Letters; (USA), Journal Name: Physical Review Letters; (USA) Vol. 66:13; ISSN PRLTA; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ALLOY SYSTEMS
ALLOYS
BINARY ALLOY SYSTEMS
CRITICAL FIELD
DATA
EXPERIMENTAL DATA
HIGH-TC SUPERCONDUCTORS
INFORMATION
IRREVERSIBLE PROCESSES
MAGNETIC FIELDS
MAGNETIC FLUX
MEAN-FIELD THEORY
MELTING POINTS
NIOBIUM ALLOYS
NUMERICAL DATA
PHYSICAL PROPERTIES
SUPERCONDUCTING WIRES
SUPERCONDUCTORS
THERMODYNAMIC PROPERTIES
TIN ALLOYS
TITANIUM ALLOYS
TRANSITION TEMPERATURE
ULTRALOW TEMPERATURE
VERY LOW TEMPERATURE
WIRES