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The Interaction between s‐n‐Domain Walls and Lattice Defects in Type‐I Superconductors
Author(s) -
Riedel H.,
Kronmüller H.
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.2220630122
Subject(s) - condensed matter physics , dislocation , superconductivity , pinning force , lattice (music) , type ii superconductor , materials science , magnetization , nonlinear system , type (biology) , domain (mathematical analysis) , physics , magnetic field , mathematics , quantum mechanics , critical current , mathematical analysis , geology , acoustics , paleontology
The interaction between crystal dislocations and sn‐walls in type‐I superconductors is treated on the basis of the micromagnetic equations of superconductors. The elastic properties of the sn‐walls are described by quasi‐dislocations and the interaction force with the dislocations is derived from a generalized Peach‐Koehler formula. A statistical analysis of the total force exerted by randomly distributed dislocations on sn‐walls yields characteristic differences between the δV‐effect and the nonlinear elastic effects (δE‐, P‐effect) concerning the mean wavelength of the field of force and the dependence on the dislocation density. The relative changes of the magnetization curve caused by wall pinning due to dislocations are shown to amount to 5 to 15% for large plastic deformations.