Effect of calcination temperature on electromagnetic property of Ni<sub>0.5</sub>Zn<sub>0.5</sub>Fe<sub>2</sub>O<sub>4</sub> prepared by two-step method
The Ni<sub>0.5</sub>Zn<sub>0.5</sub>Fe<sub>2</sub>O<sub>4</sub> nano absorbing materials were prepared by two-step method(coprecipitation method combined with sol-gel method), and the microwave absorption influence of the calcination temperature of the...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Journal of Materials Engineering
2019-01-01
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| Series: | Cailiao gongcheng |
| Subjects: | |
| Online Access: | http://jme.biam.ac.cn/CN/Y2019/V47/I1/64 |
| Summary: | The Ni<sub>0.5</sub>Zn<sub>0.5</sub>Fe<sub>2</sub>O<sub>4</sub> nano absorbing materials were prepared by two-step method(coprecipitation method combined with sol-gel method), and the microwave absorption influence of the calcination temperature of the precursor in sol-gel method were explored. Moreover, the microstructure and electromagnetic properties of the as-prepared samples were characterized by the X-ray diffraction (XRD), atomic force microscope (AFM), vector network analysis (VNA). Consequently, XRD analysis indicates that the pure Ni<sub>0.5</sub>Zn<sub>0.5</sub>Fe<sub>2</sub>O<sub>4</sub> nanoparticles can be obtained while the temperature is higher than 650℃. The AFM results show that the microstructure size of the samples tends to be smaller and more uniform while the temperature is increased. Besides, the VNA results indicate the Ni<sub>0.5</sub>Zn<sub>0.5</sub>Fe<sub>2</sub>O<sub>4</sub> exhibits best electromagnetic properties within 2-12.4GHz at the calcination the temperature is 650℃, and the as-prepared samples possess excellent microwave absorption performance. The qualified absorption bandwidth reaches 4.9GHz, and the maximum reflection loss reaches -24.94dB. |
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| ISSN: | 1001-4381 1001-4381 |