Realization of strong microwave absorption characteristics of Gd 5 Si 2 Ge 2 nanoparticles with materials data-driven discovery

Abstract

Abstract In this study, we utilized a materials data-driven approach to investigate the microwave absorption characteristics of Gd5Si2Ge2 nanocomposites. These results suggests that Gd5Si2Ge2 nanocomposites possess highly efficient microwave absorption properties. It was observed that varying the loading of the Gd5Si2Ge2 nanoparticles in a polymer matrix, such as polydimethylsiloxane (PDMS), resulted in changes in reflection loss (RL). However, it was also found that simply increasing the loading of the Gd5Si2Ge2 nanoparticles in PDMS did not improve RL performance. To optimize the RL performance, we employed an electromagnetic data-driven methodology. Obtained results predict a remarkable RL of ≤ -60 dB for a composite containing 60 wt% Gd5Si2Ge2 nanoparticles loaded PDMS in the frequency range 8.2–18 GHz. This prediction was supported by experimental data, which showed a minimum RL value of -57 dB with multiple RL≤-10 dB bandwidth. These findings validate the proposed proof of concept of utilizing data-driven methodology to obtain broadband and robust microwave absorption characteristics in Gd5Si2Ge2 nanocomposites.