采用微波辐射溶胶-凝胶自蔓延法合成了铁酸锌(ZnFe2O4)纳米粉体,通过差示扫描量热仪、X射线衍射仪、扫描电镜和超导量子干涉仪表征粉体的相结构、微观形貌和磁性能。结果表明:随微波辐射时间由10min增加至15min,微波加热由原来的介电损耗转变为磁滞损耗,使得ZnFe2O4晶粒尺寸增大,结晶度提高。随着微波辐射时间的增加,饱和磁化强度和矫顽力均增加。 Zinc ferrite (ZnFe2O4) nanopowders were synthesized by sol-gel self-propagating microwave irradiation. The phase structures of the powders were characterized by differential scanning calorimetry, X-ray diffraction, scanning electron microscopy and superconducting quantum interference spectroscopy. Micromorphology and magnetic properties. The results show that as the microwave irradiation time increases from 10 min to 15 min, the microwave heating changes from the original dielectric loss to hysteresis loss, which makes the grain size of ZnFe2O4 increase and the crystallinity increases. As the microwave irradiation time increases, the saturation magnetization and coercivity increase.