One-step hydrothermal synthesis and enhanced microwave absorption properties of Ni0.5Co0.5Fe2O4/graphene composites in low frequency band |
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| Authors: | Pengfei Yin Yu Deng Limin Zhang Wenjuan Wu Jian Wang Xing Feng Xiyuan Sun Huayao Li Yu Tao |
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| Affiliation: | 1. College of Science, Sichuan Agricultural University, Ya’an 625014, PR China;2. College of Water Conservancy and Hydropower Engineering, Sichuan Agricultural University, Ya’an 625014, PR China;3. Key Laboratory of Space Applied Physics and Chemistry (Ministry of Education), School of Science, Northwestern Polytechnical University, Xi’an 710072, PR China |
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| Abstract: | Ni0.5Co0.5Fe2O4/graphene composites were synthesized successfully via one-step hydrothermal method. The crystal structure, morphology and corresponding elemental distribution, electromagnetic parameters and microwave absorption performances of the as-prepared composites were measured by XRD, SEM, TEM and VNA, respectively. The results indicated that the microwave absorbing performance can be obviously enhanced through the addition of graphene in a suitable range, the magnetic loss plays a dominant contribution for the microwave absorption of composites. The maximum reflection loss of ?30.92?dB at 0.84?GHz with a ?10?dB bandwidth over the frequency range of 0.58–1.19?GHz is obtained when the composite contains 12?wt% graphene and the thickness of sample is 4?mm. This investigation presents a simple method to prepare Ni0.5Co0.5Fe2O4/graphene composites with excellent microwave absorption performance in the low frequency band of 0.1–3?GHz. |
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| Keywords: | Ferrites Graphene Composites Microwave absorption properties Hydrothermal synthesis method |
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