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Elastic Constants of the Fluxoid Lattice Near the Upper Critical Field
Author(s) -
Labusch R.
Publication year - 1969
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.19690320145
Subject(s) - condensed matter physics , modulus , shear modulus , physics , lattice (music) , magnetic field , elastic modulus , materials science , thermodynamics , quantum mechanics , composite material , acoustics
The elastic constants of the fluxoid lattice are calculated in terms of the reversible magnetisation curve by taking the appropriate derivatives of the free energy of the fluxoid assembly. The expressions obtained in previous work for the compressional modulus and for the shear modulus c 44 in magnetic fields well below H c2 are confirmed and their validity over the entire range of field between H c1 and H c2 is established. A new expression is derived for the shear modulus c 66 in high fields. It turns out that c 66 goes quadratically to zero if the applied field approaches H c2 .