Analysis of the role of M-type hexaferrite-based materials in electromagnetic interference shielding

M-type hexaferrite has attracted much attention for its large magneto-crystalline anisotropic energy, exceptionally good chemical stability, corrosion resistance, high Curie temperature, and high coercivity. In this review paper, our goal is to examine the microwave absorption properties and related studies of M-type hexaferritebased materials. The microwave absorption properties of hexaferrite-based materials in the S, X, and Ku-band are discussed with their corresponding reflection losses. Complementarity between magnetic loss and dielectric loss is found to have a great impact on the proper absorption of microwaves. The mechanisms corresponding to the microwave absorption in different morphologies and structural adaptations of hexaferrite have been elaborated in the article. The ongoing trends and future perspectives of these materials are also outlined.

Automated summary

M-type hexaferrite is highly regarded for its large magneto-crystalline anisotropic energy, exceptional chemical stability, corrosion resistance, high Curie temperature, and high coercivity. This review paper focuses on examining the microwave absorption properties and related studies of materials based on M-type hexaferrite, discussing their performance in various microwave bands and emphasizing the complementarity between magnetic loss and dielectric loss for effective microwave absorption. The article elaborates on the mechanisms of microwave absorption in different morphologies and structural adaptations of hexaferrite, as well as outlining current trends and future perspectives of these materials.