| http://www.w3.org/ns/prov#value | - There can be used a garnet series or ferrite series oxide magnetic substance, the alternate deposition of a noble metal such as Pt or Pd and a transition metal such as Fe or Co and/or a rare earth metal such as Tb or Gd, a Heuslar alloy such as PtMnSb, or another material such as MnBi which has a large magneto-optical effect and a thin film of which can be formed.
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