Hierarchical porous Fe3O4/RGO nanocomposite powders as high performance microwave absorbers
Fe3O4/reduced graphene oxide (RGO) composite powders were prepared by solution combustion synthesis method. The effects of fuel type; glycine and urea; on the structure, microstructure, magnetic, and microwave absorption properties were characterized by modern methods. A mixture of α-Fe2O3 and Fe3O4...
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| Format: | Article |
| Language: | English |
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Elsevier
2021-07-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785421004427 |
| _version_ | 1819083206631096320 |
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| author | A. Tayebi Pak S.M. Masoudpanah M. Adeli M. Jazirehpour |
| author_facet | A. Tayebi Pak S.M. Masoudpanah M. Adeli M. Jazirehpour |
| author_sort | A. Tayebi Pak |
| collection | DOAJ |
| description | Fe3O4/reduced graphene oxide (RGO) composite powders were prepared by solution combustion synthesis method. The effects of fuel type; glycine and urea; on the structure, microstructure, magnetic, and microwave absorption properties were characterized by modern methods. A mixture of α-Fe2O3 and Fe3O4 phases was obtained by the urea fuel, while the glycine fuel led to the pure Fe3O4 phase. The scanning and transmission electron microscopy showed the Fe3O4 nanoparticles were distributed on the ultrathin RGO sheets. With the addition of RGO, the saturation magnetization increased up to 84 emu/g due to the higher amounts of the magnetite phase. The Fe3O4/RGO composite powders synthesized by the urea fuel showed a reflection loss (RL) of −28 dB with effective bandwidth of 1.4 GHz in the C1 band at the matching thickness of 3.7 mm. However, the pristine Fe3O4 powders prepared by the glycine fuel had higher absorption properties, including higher RL of −33 dB and broader bandwidth of 3 GHz in the Ku band at the matching thickness of 1.2 mm. In addition to the higher magnetic and dielectric losses, the higher microwave absorption performance was attributed to the better impedance matching property caused by the porous microstructure. |
| first_indexed | 2024-12-21T20:28:53Z |
| format | Article |
| id | doaj.art-e7344e8a53904056a3d6b0c90b465bea |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-12-21T20:28:53Z |
| publishDate | 2021-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-e7344e8a53904056a3d6b0c90b465bea2022-12-21T18:51:18ZengElsevierJournal of Materials Research and Technology2238-78542021-07-0113548560Hierarchical porous Fe3O4/RGO nanocomposite powders as high performance microwave absorbersA. Tayebi Pak0S.M. Masoudpanah1M. Adeli2M. Jazirehpour3School of Metallurgy & Materials Engineering, Iran University of Science and Technology (IUST), Tehran, IranSchool of Metallurgy & Materials Engineering, Iran University of Science and Technology (IUST), Tehran, Iran; Corresponding author.School of Metallurgy & Materials Engineering, Iran University of Science and Technology (IUST), Tehran, IranDepartment of Electroceramics and Electrical Engineering, Malek Ashtar University of Technology, IranFe3O4/reduced graphene oxide (RGO) composite powders were prepared by solution combustion synthesis method. The effects of fuel type; glycine and urea; on the structure, microstructure, magnetic, and microwave absorption properties were characterized by modern methods. A mixture of α-Fe2O3 and Fe3O4 phases was obtained by the urea fuel, while the glycine fuel led to the pure Fe3O4 phase. The scanning and transmission electron microscopy showed the Fe3O4 nanoparticles were distributed on the ultrathin RGO sheets. With the addition of RGO, the saturation magnetization increased up to 84 emu/g due to the higher amounts of the magnetite phase. The Fe3O4/RGO composite powders synthesized by the urea fuel showed a reflection loss (RL) of −28 dB with effective bandwidth of 1.4 GHz in the C1 band at the matching thickness of 3.7 mm. However, the pristine Fe3O4 powders prepared by the glycine fuel had higher absorption properties, including higher RL of −33 dB and broader bandwidth of 3 GHz in the Ku band at the matching thickness of 1.2 mm. In addition to the higher magnetic and dielectric losses, the higher microwave absorption performance was attributed to the better impedance matching property caused by the porous microstructure.http://www.sciencedirect.com/science/article/pii/S2238785421004427Fe3O4RGOMagnetic propertiesMicrowave absorption performance |
| spellingShingle | A. Tayebi Pak S.M. Masoudpanah M. Adeli M. Jazirehpour Hierarchical porous Fe3O4/RGO nanocomposite powders as high performance microwave absorbers Journal of Materials Research and Technology Fe3O4 RGO Magnetic properties Microwave absorption performance |
| title | Hierarchical porous Fe3O4/RGO nanocomposite powders as high performance microwave absorbers |
| title_full | Hierarchical porous Fe3O4/RGO nanocomposite powders as high performance microwave absorbers |
| title_fullStr | Hierarchical porous Fe3O4/RGO nanocomposite powders as high performance microwave absorbers |
| title_full_unstemmed | Hierarchical porous Fe3O4/RGO nanocomposite powders as high performance microwave absorbers |
| title_short | Hierarchical porous Fe3O4/RGO nanocomposite powders as high performance microwave absorbers |
| title_sort | hierarchical porous fe3o4 rgo nanocomposite powders as high performance microwave absorbers |
| topic | Fe3O4 RGO Magnetic properties Microwave absorption performance |
| url | http://www.sciencedirect.com/science/article/pii/S2238785421004427 |
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