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The Boson Field Analysis of the Critical Temperature Region in Ferromagnets
Author(s) -
Tošić B. S.,
Marinković M. M.,
Berar S.
Publication year - 1977
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.2220810126
Subject(s) - ferromagnetism , antiferromagnetism , condensed matter physics , boson , physics , field (mathematics) , phase transition , phase (matter) , quantum mechanics , mathematics , pure mathematics
A new method is proposed which makes it possible to apply the boson picture to ferromagnetics at high temperatures. A result of such an approach is the appearance of an additional level that leads to a phase transition from the ferromagnetic to the antiferromagnetic phase which takes place in the majority of rare earths. It is also shown that the boson picture of the ferromagnetics yields a richer physical content than the other, usual ones. Its main consequence leads to the conclusion that the Heisenberg model of ferromagnets works best to weak ferromagnetics (mainly rare earths).