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A Mossbauer effect investigation of the formation of MnZn nanoferrite phase

机译:MnZn纳米铁氧体相形成的Mossbauer效应研究

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摘要

In this paper, Mn_(0.5)Zn_(0.5)Fe_2O_4 nanopowders were prepared by mechanochemical processing of the mixture of two single phase ferrites, MnFe_2O_4 and ZnFe_2O_4. Room-temperature ~(57)Fe Mossbauer spectroscopy was used to study the mechanically induced evolution of the ZnFe_2O_4/MnFe_2O_4 mixture submitted to the high-energy milling process. The Mossbauer spectrum of the ZnFe_2O_4/MnFe_2O_4 sample milled for 30 h revealed the presence of Mn_(0.5)Zn_(0.5)Fe_2O_4. The mean crystallite size of the mechanosynthesized mixed ferrite, estimated using Scherrer's formula, was found to be 14 nm.
机译:通过机械化学处理两种单相铁氧体MnFe_2O_4和ZnFe_2O_4的混合物,制备了Mn_(0.5)Zn_(0.5)Fe_2O_4纳米粉。采用室温〜(57)Fe Mossbauer光谱研究了高能磨削过程中ZnFe_2O_4 / MnFe_2O_4混合物的机械诱导演化。研磨30 h的ZnFe_2O_4 / MnFe_2O_4样品的Mossbauer光谱表明存在Mn_(0.5)Zn_(0.5)Fe_2O_4。使用谢勒公式估算的机械合成混合铁氧体的平均微晶尺寸为14 nm。

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