Internal energy and specific heat in a ferromagnetic-antiferromagnetic double layers

Author： Wei Jiang   An-Bang Guo  

Publisher： IOP Publishing

ISSN： 1009-1963

Source： Chinese Physics, Vol.16, Iss.12, 2007-12, pp. : 3832-3836

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Abstract

The internal energy and specific heat of a Heisenberg ferro- antiferromagnetic double-layer system are studied by using spin-wave theory and the retarded Green function method at low temperatures. Numerical results show that the antiferromagnetic intralayer coupling J2 has an important influence on internal energy and specific heat for a four-sublattice system with antiferromagnetic (or ferrimagnetic) interlayer couplings.

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