| http://www.w3.org/ns/prov#value | - With respect to an actual example of magneto-optical material, alloys composed of an element such as terbium (Tb), cobalt (Co), iron (Fe), gadolinium (Gd), chromium (Cr), neodymium (Nd), dysprosium (Dy), bismuth (Bi), palladium (Pd), samarium (Sm), holmium (Ho), praseodymium (Pr), manganese (Mn), titanium (Ti), erbium (Er), ytterbium (Yb), lutetium (Lu) and tin (Sn) can be used, wherein an alloy i
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