Ferrite multi-granule nanoclusters are fabricated for microwave absorption materials in different sized particles and granules by modified polyol process. Various sizes of ferrite nanoclusters are placed on graphene-based composites and the behavior of their microwave absorbing properties is studied. The absorbing properties are measured using the free-space method with two horn antennas for X-band range (8.2 GHz–12.4 GHz). Relative permittivity and permeability values are calculated in measured frequency domain. The absorption coefficient changes by forming ferrite-graphene composites are presented as well.

中文翻译：

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用于微波吸收应用的石墨烯-磁铁矿多颗粒纳米团簇复合材料的制备

铁氧体多颗粒纳米团簇是通过改性多元醇工艺制备的不同尺寸颗粒和颗粒的微波吸收材料。将各种尺寸的铁氧体纳米团簇放置在基于石墨烯的复合材料上，并研究了它们的微波吸收特性。使用自由空间方法测量 X 波段范围 (8.2 GHz–12.4 GHz) 的两个喇叭天线的吸收特性。在测量的频域中计算相对介电常数和磁导率值。还介绍了通过形成铁氧体-石墨烯复合材料来改变吸收系数。