Ferromagnetic SrFe₁₂O₁₉/ZnFe₂O₄ nanostructure composite particles were synthesized by the co-precipitation of chloride salts utilizing the sodium hydroxide solution. The resulting precursors were heat treated from 900 to 1200 °C for 4 h. The microwave absorption properties of the nanostructure composite particles were studied by ferromagnetic resonance, transmit-line theories, and reflection loss (RL) plots. Based upon the theoretical results, the microwave absorption properties can be improved by increasing the saturation magnetization and the thickness to the optimum size and decreasing the coercivity. By increasing the thickness to the optimum size and raising the heat treatment temperature (HT), the microwave absorption properties were increased (according to theoretical results). For example, the RL (at the resonance frequency) was increased from − 5 to − 15 dB by increasing the temperature from 900 to 1200 °C.

铁磁SrFe ₁₂ O ₁₉ / ZnFe ₂ O ₄纳米结构复合颗粒是通过利用氢氧化钠溶液共沉淀氯化物盐合成的。将所得的前体在900至1200°C的温度下热处理4小时。通过铁磁共振，传输线理论和反射损耗（RL）图研究了纳米结构复合颗粒的微波吸收特性。根据理论结果，可以通过将饱和磁化强度和厚度增加到最佳尺寸并降低矫顽力来改善微波吸收性能。通过将厚度增加到最佳尺寸并提高热处理温度（HT），可以提高微波吸收性能（根据理论结果）。例如，