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Low-temperature plasticity observations of superconducting Pb-Sb alloys

Low-temperature plasticity observations of superconducting Pb-Sb alloys Plasticity of quenched and aged Pb-Sb alloys of various Sb concentrations and the Δε ns value of the creep strain jump at transition to the superconducting state have been studied. It is shown that the jump value for the quenched state is in inverse proportion to the hardening coefficient. In the aged alloy the Δε ns value decreases with the impurity concentration increasing, and at 3 at. % of Sb it becomes equal to zero. The results obtained are compared with Natsik's theory considering thermally activated unpinning of dislocations from obstacles, which is more probable in the superconducting state. The comparison demonstrates a good qualitative agreement of theory with experiment. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Low Temperature Physics Springer Journals

Low-temperature plasticity observations of superconducting Pb-Sb alloys

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References (6)

Publisher
Springer Journals
Copyright
Copyright
Subject
Physics; Condensed Matter Physics; Characterization and Evaluation of Materials; Magnetism, Magnetic Materials
ISSN
0022-2291
eISSN
1573-7357
DOI
10.1007/BF00656556
Publisher site
See Article on Publisher Site

Abstract

Plasticity of quenched and aged Pb-Sb alloys of various Sb concentrations and the Δε ns value of the creep strain jump at transition to the superconducting state have been studied. It is shown that the jump value for the quenched state is in inverse proportion to the hardening coefficient. In the aged alloy the Δε ns value decreases with the impurity concentration increasing, and at 3 at. % of Sb it becomes equal to zero. The results obtained are compared with Natsik's theory considering thermally activated unpinning of dislocations from obstacles, which is more probable in the superconducting state. The comparison demonstrates a good qualitative agreement of theory with experiment.

Journal

Journal of Low Temperature PhysicsSpringer Journals

Published: Nov 3, 2004

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