The effect of interlayer coupling on the magnetic properties of layered ferrimagnets is studied using spin-wave theory. The sublattice magnetization is calculated for different interlayer coupling strengths and temperatures, and its asymptotic expressions are given in two low-temperature regimes distinguished by the ratio delta of the interlayer and intralayer coupling strengths. It is shown that the interlayer coupling has an important effect upon the magnetic properties of ferrimagnets.
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