Abstract
The polar Kerr effect in several compounds of the R 2Fe 14B and R 2Co 14B series (R=rare earth metal) at room temperature was measured in the energy range 0.5–5 eV. It was found that the 3d sublattice magnetization is mainly responsible for the Kerr effect. The potential use of R 2Fe 14B compounds for erasable magneto-optical recording is briefly discussed.
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