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Short‐Range Magnetic Order in a Disordered Ising Ferromagnet
Author(s) -
Medvedev M. V.,
Goryainova S. M.
Publication year - 1980
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.2220970204
Subject(s) - condensed matter physics , ferromagnetism , ising model , paramagnetism , physics , magnetic field , lattice (music) , range (aeronautics) , materials science , quantum mechanics , acoustics , composite material
In the molecular field approximation it is shown that in an Ising magnet with nearest‐neighbour random exchange bonds, both the long‐range ferromagnetic order and a short‐range magnetic one appear at the transition from the paramagnetic state into the random ferromagnetic one. The two‐point two‐spin correlation function of the short‐range magnetic order falls off like R −1 on at large distances R on ≫ a ( a is the lattice spacing).
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