Abstract
The magnetostatic energy has been calculated theoretically for the general domain structure in the multilayers, which consists of magnetic layers with perpendicular magnetization and nonmagnetic layers. This general form is applied to the calculations for the regular lattice domain structures of stripe domains and bubble hexagonal lattice domains and for the single isolated bubble domain. The magnetization process, the magnetization curves and the domain spacing have been calculated numerically with the wall energy density and the number of layers as parameters. The calculated magnetization curves are compared with the experimental data for Co/Pt multilayers and good coincidence is obtained between both curves. The wall energy density per Co layer of Co/Pt multilayers is estimated to be about 6–8 erg/cm 2.
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