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Fabrication of Electrospun $Ni_{0.5}Zn_{0.5}Fe_{2}O_{4}$ Nanofibers Using Polyvinyl Pyrrolidone Precursors and Electromagnetic Wave Absorption Performance Improvement
| Content Provider | MDPI |
|---|---|
| Author | Na, Kyeong-Han Jang, Kyong-Pil Kim, Sung-Wook Choi, Won-Youl |
| Copyright Year | 2021 |
| Description | $Ni_{0.5}Zn_{0.5}Fe_{2}O_{4}$ nanofibers with an average diameter of 133.56 ± 12.73 nm were fabricated by electrospinning and calcination. According to our thermogravimetric—differential thermal analysis and X-ray diffraction results, the calcination temperature was 650 °C. The microstructure, crystal structure, and chemical composition of the nanofibers were observed using field-emission scanning electron, X-ray diffraction, and energy-dispersive X-ray spectroscopy. Commercial particle samples and samples containing 10 wt% and 20 wt% nanofibers were fabricated, and the electromagnetic properties were analyzed with a vector network analyzer and a 7.00 mm coaxial waveguide. Regardless of the nanofiber content, $Ni_{0.5}Zn_{0.5}Fe_{2}O_{4}$ was dominantly affected by the magnetic loss mechanism. Calculation of the return loss based on the transmission line theory confirmed that the electromagnetic wave return loss was improved up to −59.66 dB at 2.75 GHz as the nanofiber content increased. The absorber of mixed compositions with $Ni_{0.5}Zn_{0.5}Fe_{2}O_{4}$ nanofibers showed better microwave absorption performance. It will be able to enhance the performance of commercial electromagnetic wave absorbers of various types such as paints and panels. |
| Starting Page | 4247 |
| e-ISSN | 20734360 |
| DOI | 10.3390/polym13234247 |
| Journal | Polymers |
| Issue Number | 23 |
| Volume Number | 13 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2021-12-03 |
| Access Restriction | Open |
| Subject Keyword | Polymers Spectroscopy Microwave Absorber Electrospinning Nanofibers Nizn Ferrite Return Loss |
| Content Type | Text |
| Resource Type | Article |
