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The Flow Stress of the Flux Line Lattice and the Magnetization Curve of Low‐ x Type II Superconductors
Author(s) -
Essmann U.,
Schmucker R.
Publication year - 1974
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2220640223
Subject(s) - magnetization , condensed matter physics , flux pinning , superconductivity , lattice (music) , flux (metallurgy) , type ii superconductor , line (geometry) , materials science , physics , geometry , high temperature superconductivity , magnetic field , mathematics , metallurgy , quantum mechanics , acoustics
In low‐ x type II superconductors there exists a long range attractive interaction between flux lines. This leads to a step B 0 in the magnetization curve at H c1 . Experimental results frequently deviate from the ideal behaviour. The deviations are caused by the necessity to perform a plastic deformation of the intruding flux line lattice in order to accommodate the specimen geometry, and by flux line pinning. It is shown that both mechanisms lead to a finite slope of the magnetization curve near H c1 . The flow stress of the FLL and the volume pinning force may be obtained from magnetization measurements.