prov:value
| - Specific examples of these divalent metals are Cr, Mn, Co, Ni, Cu, Zn and the like; which can be added in a range of from 0 to about 10 atomic % to the iron oxides describedabove.Examples of ferromagnetic chromium dioxides described above are CrO.sub.2 and CrO.sub.2 to which metals such as Na, K, Ti, V, Mn, Fe, Co, Ni, Te, Ru, Sn, Ce, Pb or the like, semi-conductors such as P, Sb, Te, or the like,
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