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On the creep of some metals at the superconducting transitionJournal of Low Temperature Physics, 2
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 of Low Temperature Physics – Springer Journals
Published: Nov 3, 2004
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