@article{Feng2026, 
author = {Xia Feng and Yixiang Lu and Fanqi Meng and Yi Hou and Xiaodong Feng and Haikui Zhu and Lixi Wang},
title = {Defect-engineering-driven synergistic modulation of dual-phase (Fe0.5Mg0.5CoNiCuMn)3O4@CuO ceramics for superior microwave absorption},
year = {2026},
journal = {Journal of Advanced Ceramics},
volume = {15},
number = {2},
pages = {9221229},
keywords = {defect engineering, lattice distortion, electromagnetic protection, high-entropy ferrite ceramics, surface oxygen vacancy},
url = {https://www.sciopen.com/article/10.26599/JAC.2025.9221229},
doi = {10.26599/JAC.2025.9221229},
abstract = {To overcome the challenge of insufficient loss strength in single-phase high-entropy ferrites, this work develops a novel defect-engineering-driven dual-phase strategy to fabricate spinel/rock-salt structured (Fe0.5Mg0.5CoNiCuMn)3O4@CuO composite ceramics. The combination of experimental characterization and first-principles calculations demonstrates a strong positive correlation between the defect concentration and microwave absorption performance. The optimized material achieves outstanding electromagnetic absorption with a minimum reflection loss of −48 dB and an effective absorption bandwidth of 3.9 GHz in the X-band. Remarkably, this work obtains 70% bandwidth retention after oxidation at 1200 °C and a thermal conductivity of 2.154 W·m−1·K−1, demonstrating exceptional high-temperature stability and thermal management capability. This study pioneers a new pathway for the development of oxidation-resistant and electromagnetic protection materials through defect-engineering-driven synergistic modulation.}
}