Open AccessAPPLICATION OF THE BETHE-WEISS METHOD TO THE STATISTICAL THEORY OF FERROMAGNETISM OF SUBSTITUTIONAL SOLID SOLUTIONS
Author(s) -
Xu Zhang,
Leng Zhong-Ang,
YinYuan Li
Publication year - 1960
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.16.289
Subject(s) - paramagnetism , condensed matter physics , ferromagnetism , curie temperature , curie–weiss law , spin (aerodynamics) , magnetic susceptibility , physics , binary number , materials science , thermodynamics , mathematics , arithmetic
The Bethe-Weiss method in the statistical theory of Heisenberg ferromagnetism is generalized and applied to the case of subtitutional solid solutions of random distribution. Calculations are carried out for binary solutions containing magnetic atoms of spin 1/2 and nonmagnetic ones. The Curie temperature v.s. composition and the paramagnetic susceptibility v.s. temperature curves are obtained for simple and body-centered cubic lattices. The degree of magnetic short-range order at the Curie point becomes higher as the concentration of non-magnetic atoms increases. The results are qualitatively applicable to solutions of two different kinds of magnetic atoms. It is also concluded that the method gives an useful approximation only for higher concentrations of magnetic atoms.