Abstract
Fe doped La2CoMnO6 perovskite La2Co(1-x)FexMnO6 (abbreviated as LCFxMO, x = 0.1˜0.4) ceramics exhibiting P21/n phase and dense structure with micron grains resulted from the lower sintering temperature of 930 °C were fabricated by plasma activated sintering. The Co2+/Mn4+ concentration in LCFxMO ceramics gradually increased with the increase of Fe doping, then decreased due to excessive doping, reflecting the change of order degree of B-site cations. The Co2+/Mn4+ concentration reached the highest value in LCF0.2MO, which proved the ascendant B-site cations ordering degree of LCF0.2MO. Moreover, the smaller grains resulted from rapid sintering period was also one of another cause of high order degree. It was found that the saturation magnetization was greatly enhanced by a small amount of Fe doping. Comparing to other Fe doped content of LCFxMO ceramics, the LCF0.2MO ceramic also had the largest saturation magnetization (57.05 emu/g).
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