Domain observation and its compositional dependence in RE-TM magneto-optical media

Recording domains in magnetooptical media were observed with a polarizing microscope. Regularly shaped domains were observed for transition-metal-rich compositions, whereas jagged domains were observed for rare-earth-rich compositions with compensation temperatures close to the Curie temperature. The results were interpreted by means of a force-balance model. The dependence of the domain size and shape on the external magnetic field is discussed.<
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