【摘要】 对用Ｃｏ２＋、Ｔｉ４＋部分置换Ｆｅ３＋的Ｂａ（ＭｎＺｎ）ａＣｏｂＦｅ１６－ｙＣｏ２＋０．５ｙＴｉ４＋０．５ｙＯ２７－Ｗ型平面六角晶系微波铁氧体吸收剂的制备和特性进行了研究，并对其复介电常数的实部ε′和虚部ε″、磁导率的实部μ′和虚部μ″、损耗随微波频率、Ｃｏ２＋、Ｔｉ４＋含量、涂层厚度的变化作了测试和分析，发现当ｙ＝１．０时铁氧体的吸收性能最佳，其最佳厚度为１．４０ｍｍ，吸收衰减最大达２７．５ｄＢ。更多还原

【Abstract】 The preparation of Ba(MnZn)aCobFe16-yCo2+0.5yTi4+0.5yO27-W type hexagonal planar crystal microwave absorbent and their absorption properties have been studied by partly substituting Fe3+ ions with Co2+ and Ti4+ ions .The change of the real and imaginary parts of complex dielectric constant and magnetic permeability, loss of ferrite with the variation of microwave frequency, component of Co2+ and Ti4+,and coat thickness were measured and analyzed. We found that when the component y equals 1.0, the optimal absorption properties could be achieved. Its optimal thickness is equal to 1.40mm and the best absorption delay is 27.5dB.更多还原