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Rare Metal Materials and Engineering Volume 44, Issue 9, September 2015 Online English edition of the Chinese language journal Cite this article as: Rare Metal Materials and Engineering, 2015, 44(9): 2091-2094 ARTICLE Microwave Absorbing Properties of Ni/Ferrite Mixture Liu Xing, Pan Shunkang, Cheng Lichun, Li Chunming, Mo Huihai, Zhou Huaiying Guangxi Key Laboratory of Information Materials, Guilin University of Electronic Science and Technology, Guilin 54 1004, China Abstract: The Sr-W type planar hexagonal ferrite was synthesized by a sol-gel method, and its morphology and phase structure were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The microwave absorbing properties of the mixtures with different ratios of Ni/ferrite were studied by vector network analyzer (VAZ). The results demonstrate that with the increase of hexagonal ferrite content, the microwave absorbing peaks of the mixtures shift to higher frequencies, and when the mixture consists of 20% Ni and 80% Sr-W-type ferrite, its microwave absorbing performance is the most advantageous. When absorbing coating thickness is 2 mm, the minimum reflectivity and absorbing peak frequency is –20.69 dB at 12.08 GHz and the bandwidth less than – 10 dB reaches 4 GHz. The absorbing peak shifts to low-frequency with the increase of absorbing coating thickness, and when the coating thickness reaches