Professor Ma Zhenhui recently published an academic paper titled "The Electron Migration Polarization Boosting Electromagnetic Wave Absorption Based on Ce Atoms Modular Yolk @ shell FexN @ NGC" in the international high-level journal Advanced Materials (IF=29.4)

The paper uses FexN as a magnetically adjustable magnetic core by changing FexN@NGC The percentage of N in (x=2-4) nanoparticles achieves the regulation of magnetic loss ability. Further modification of Ce atoms on the surface of NGC shell was carried out to regulate the dielectric properties, resulting in FexN@NGC /Ce composite materials can be achieved by changing the concentration of Ce during this process FexN@NGC /Regulation of Ce dipole site density. Meanwhile, in FexN@NGC /In Ce, the single atom of Ce is mainly+3 valence, while in clusters/CeO2 particles it is Ce4+. The difference in electronegativity between the two can transfer electrons from Ce3+to Ce4+, achieving control over electron migration polarization. In the end, in Fe4N@NGC /Coordinated control of electron transfer polarization, dipole polarization, and magnetic loss has been achieved in CeSA+Cs+NPs, resulting in excellent electromagnetic wave absorption performance. This work proposes a novel electromagnetic wave loss mechanism, which is an important extension of existing electromagnetic wave loss mechanisms.

source: https://mp.weixin.qq.com/s__biz=MzIyODA3NTc0NA==&mid=2650058074&idx=3&sn=e58bb30b316e885f5d14c5e524c84ac4&chksm=f10f34dc490e04b75601e67d8f60f4bcfc4af10d17bab0c4e9de60bbd3fb0e9541ff9f384107&scene=27