Premium
The mössbauer spectra of substituted systems local molecular field theory
Author(s) -
Coey J. M. D.,
Sawatzky G. A.
Publication year - 1971
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.2220440225
Subject(s) - superexchange , ion , spectral line , magnetic field , condensed matter physics , chemistry , mössbauer spectroscopy , range (aeronautics) , materials science , crystallography , physics , quantum mechanics , organic chemistry , composite material
An insulator with two different magnetic ions distributed in several crystallographic sites is considered in the molecular field approximation. As an example a material containing a random distribution of iron and a non‐magnetic ion in equivalent sites is studied, assuming that the superexchange between an iron ion and cations on six nearest‐neighbour sites is the dominant interaction. Provided that a small longer range interaction is present, the Mössbauer spectra predicted for different non‐magnetic concentrations at various temperatures are in agreement with experimental observation except just below the magnetic ordering temperature.