Abstract

The torsional-vibration method is used to investigate the relationship between Neel-type magnetostatic coupling and the thickness of the dielectric interlayer in two-layer Co¦SiO¦FeNiCo magnetic films. A comparison is made with the Neel theory, and qualitative agreement is obtained for a layer 200 A thick. The observed discrepancy between experimental and theoretical values for thin layers is explained by exchange interaction between magnetic layers.

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