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Regulation of Microwave Absorbing Performance of Magnetic Alloy/ferrite/carbon Ternary Composites by Changing Polydopamine-induced Carbothermal Reduction by R.G. Cao; W. Liu; P. Ji; S.J. Zhan; X.B. Zhang; H.L. Su is a Materials Science article available to read on EtoBox.
What is Regulation of Microwave Absorbing Performance of Magnetic Alloy/ferrite/carbon Ternary Composites by Changing Polydopamine-induced Carbothermal Reduction about?
Magnetic alloy/ferrite/nitrogen-doped carbon composites (CoFe/CoFe 2 O 4 /N-C) spheres were synthesized by controlled carbothermal reduction of Co-doped Fe2O3 nanospheres wrapped in polydopamine. Different dopamine hydrochloride dosages not only affected components and nanostructures, but also regulated the electromagnetic properties of CoFe/CoFe2O4/N-C composites. The results show that with the increase of dopamine hydrochloride dosage, graphitic degree of N-doped carbon layer would decrease after an initial increase, while the Ms values exhibit an opposite trend. All samples show similar μr spectra, and negative μ′′ values can be obtained at high frequency, which should be related to eddy current and dielectric resonance. With the increment of polydopamine, εr would first increase due to generation of CoFe and the increase in graphitic degree, and then decrease owing to the agglomeration of spherical particles. Further research on microwave absorption shows that RL peak frequency coincides with the frequency of perfect impedance matching when good impedance matching has been achieved across a wide range of frequencies. Thanks to the synergistic effects of conduction loss, interfa
Who reads Regulation of Microwave Absorbing Performance of Magnetic Alloy/ferrite/carbon Ternary Composites by Changing Polydopamine-induced Carbothermal Reduction?
It is typically read by researchers, students, and practitioners in Materials Science.
- Author
- R.G. Cao; W. Liu; P. Ji; S.J. Zhan; X.B. Zhang; H.L. Su
- Publisher
- Elsevier BV
- Published
- 2024
- Language
- EN
- Field
- Materials Science (Physical Sciences)
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