Ru-Induced Ferromagnetism and Metallicity in Mn(IV)-Rich Manganites Ln0.4Ca0.6MnO3
作者： B. Raveau , A. Maignan , C. Martin , R. Mahendiran , M. Hervieu
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摘要: Abstract The doping of Mn sublattice by Ru in the Mn(IV)-rich manganites Ln 0.4 Ca 0.6 MnO 3 ( : Lanthanide; =La, Pr, Nd, Sm) induces an insulator-to-metal transition which is not obtained Cr doping. appearance metallicity and ferromagnetism these Ru-doped explained frame phase separation scenario, forming ferromagnetic (FM) clusters, extend as content increases. particular aptitude for promoting a FM metallic state discussed, on basis Ru(V) Ru(IV) oxidation states, are isoelectronic to Mn(IV) Mn(III), respectively. Magnetoresistance also evidenced discussed.
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