Magnetic Characteristics of the System of Exchange Coupled Layers

Abstract

Using the Green function method it is shown that the deviation of the Curie temperature from its value calculated for continuous layers is related to the absolute value of the interlayer coupling parameter. The dependence of spin wave stiffness parameter on the interlayer exchange coupling is also found.

Magnetisation distribution in magnetic bilayers with rough surfaces and interface

“…2(a) presents an example of the dependence of the Curie temperature on the spacer thickness calculated either for the ideal surface and interface or for r ¼ 0:1: In Fig. 2(b) a similar comparison is presented for the case of thickness dependence of the spin-wave parameter B [7], which is the proportionality factor in the T 3=2 law for magnetisation in low temperatures. One can see that introducing of the roughness leads to decrease either in the amplitude of fluctuations of the Curie temperature or in the parameter B as a function of the spacer thickness.…”