In this work, Zn₂W hexaferrite was prepared by sol–gel (SG) and solid-state reaction (SSR) methods. The dependency of the microstructure, magnetic, and electromagnetic properties of the obtained Zn₂W hexaferrite on the two different preparation methods and the sintering temperature was investigated. First, single-phase Zn₂W hexaferrite was obtained by the SG method at sintering temperatures higher than 1250 °C, but this was not the case with the SSR method. Second, the Zn₂W hexaferrite prepared by the SG method had a larger grain size than those prepared by the SSR method under the same sintering conditions due to the higher activity of the obtained nanosized precursor powder. Third, the saturation magnetization obtained the highest value herein of 77.48 emu/g from the Zn₂W hexaferrite prepared by the SG method sintered at 1250 °C, which is higher than the value of 72.49 emu/g from the Zn₂W hexaferrite prepared by the SSR method sintered at 1300 °C. Finally, the values of reflection losses reached a maximum of 22.4 dB at 17.0 GHz with the bandwidth of 0.87 GHz over 10 and 29.5 dB at 17.9 GHz with around the bandwidth of 1.38 GHz for the hexaferrite prepared by the SG method and SSR methods, respectively, which meets the absorption requirement for high-frequency microwave applications.

在这项工作中，通过溶胶-凝胶（SG）和固态反应（SSR）方法制备了Zn ₂ W六价铁氧体。研究了所获得的Zn ₂ W六方铁氧体的微观结构，磁性和电磁性能对两种不同制备方法和烧结温度的依赖性。首先，在高于1250°C的烧结温度下，通过SG方法获得了单相Zn ₂ W六价铁氧体，但SSR方法并非如此。二，Zn ₂在相同的烧结条件下，由于所获得的纳米级前驱体粉末的活性更高，因此通过SG方法制备的六方铁氧体的晶粒尺寸大于通过SSR方法制备的六方铁氧体。第三，在1250℃下烧结的SG法制得的Zn ₂ W六铁氧体的饱和磁化强度最高，为77.48 emu / g ，高于Zn ₂的72.49 emu / g。用SSR法制得的W六方铁氧体在1300°C下烧结。最后，对于分别由SG方法和SSR方法制备的六价铁氧体，反射损耗的值在17.0 GHz时最大为22.4 dB，带宽在10时为0.87 GHz，在17.9 GHz时为29.5 dB，在1.38 GHz时带宽约为1.38 GHz。 ，满足高频微波应用的吸收要求。