Defect-Engineering-Driven Synergistic Modulation of Dual-Phase (Fe₀.₅Mg₀.₅CoNiCuMn)₃O₄@CuO Ceramics for Superior Microwave Absorption (IMAGE)

Tsinghua University Press

Defect-Engineering-Driven Synergistic Modulation of Dual-Phase (Fe₀.₅Mg₀.₅CoNiCuMn)₃O₄@CuO Ceramics for Superior Microwave Absorption

Caption

Excellent electromagnetic wave absorption is realized via the synergistic design of a dual-phase heterostructure, defect engineering, and magnetic loss modulation. The spinel/rock salt interface boosts interfacial polarization. Precise Fe/Mg ratio adjustment creates a multi-scale defect system that optimizes dielectric loss through enhanced polarization and conductivity from lattice distortion and oxygen vacancies, supplemented by interfacial defects. Restricted conductivity shifts the dominant magnetic loss mechanism to eddy currents. This integrated strategy holistically improves the material's electromagnetic loss properties, leading to superior absorption performance.

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Journal of Advanced Ceramics, Tsinghua University Press

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