Structural and Magnetic Properties of Hydrothermal Spinel Ni0.4Zn0.6Fe2O4 Ferrites

Materials Research

Yiwei Zhang¹  Ailin Xia¹  Weihua Chen¹  Renjun Ma¹ 

关键词: soft magnetic material;    hydrothermal method;    phase composition;    microstructure;    magnetic properties;   

DOI  :  10.1590/1516-1439.033115

来源: SciELO

【 摘 要 】

Spinel ferrite powder with a nominal composition Ni0.4Zn0.6Fe2O4 was prepared by a hydrothermal method, following by sintering at 700 °C and 900 °C, respectively. The structural and magnetic properties of specimens are studied. It is found that the large particles in specimens are the agglomerates of many small nanoscale crystallites. A strengthening of chemical polarization of the internal chemical bonds is found in the powder specimen after sintering. The saturation magnetization increases from 50.1 emu/g for as-synthesized powder to 63.1 emu/g for specimen sintered at 900 °C mainly due to the weakening of spin canting, while the coercivity exhibits a slight decreasing variation with the increase of sintering temperature.

【 授权许可】

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