@article{Bai2025, 
author = {Yuhang Bai and Zelong Yao and Yang Yang and Jinrui Li and Jia Liu and Peipei Wang and Huiling Du and Xing Zhao and Laifei Cheng},
title = {Joule heating-driven ultrafast synthesis of (Fe1−xMnx)2AlB2 and its electromagnetic wave absorption properties},
year = {2025},
journal = {Journal of Advanced Ceramics},
volume = {14},
number = {4},
pages = { 9221057},
keywords = {defect engineering, electromagnetic wave absorption, Joule heating-driven ultrafast synthesis, transition metal boride phases},
url = {https://www.sciopen.com/article/10.26599/JAC.2025.9221057},
doi = {10.26599/JAC.2025.9221057},
abstract = {Defect engineering enables the efficient management of electromagnetic parameters and the enhancement of electromagnetic wave (EMW) absorption. In this study, (Fe1−xMnx)2AlB2 transition metal boride (MAB) phases with a layered structure were prepared via Joule heating-driven ultrafast synthesis, and their EMW absorption properties were investigated. The experimental results demonstrate that the incorporation of Mn atoms at the M site can effectively modulate the impedance matching and EMW absorption properties of the material through the introduction of defects and lattice distortions. Notably, (Fe0.3Mn0.7)2AlB2 exhibits a reflection loss as high as −47.8 dB at 12.24 GHz, with a maximum effective absorption bandwidth of 4.16 GHz (10.24–14.40 GHz) at an ultrasmall thickness of 1.5 mm. This study provides a promising avenue for the development of excellent microwave-absorbing materials, which are essential for meeting the evolving requirements of advanced electronics. Additionally, this work offers a paradigm for enhancing other properties of MAB phases through defect engineering.}
}