Abstract
The ZnFe2O4/CoFe2O4 nanofibers and nanoparticles were prepared by electrospinning and hydrothermal methods respectively. Through the analysis of hysteresis loops, it was found that the nanofibers have higher saturation magnetization coercivity and remanence than nanoparticles, which was due to the shape anisotropy of nanofibers. Through the analysis of the switching field distribution and δM curve, it was found that there was exchange-spring behavior between soft and hard magnetic phases, and nanofibers had stronger exchange interaction than nanoparticles.
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