A Perspective on High-Entropy Oxides as Potential Electromagnetic Wave Absorbers

Area of Science:

• Materials Science
• Condensed Matter Physics
• Nanotechnology

Background:

• Growing concerns about electromagnetic radiation impact on health and electronics necessitate advanced electromagnetic wave absorption (EMA) materials.
• High-entropy oxides (HEOs), first reported in 2015, have emerged as a promising class of materials for EMA due to their unique properties.

Purpose of the Study:

• To systematically clarify the advantages of HEOs for EMA applications.
• To provide a forward-looking perspective on the future development of HEOs in the field of EMA.

Main Methods:

• Analysis of intrinsic properties of high-entropy systems.
• Evaluation of crystal structure, compositional design, and synthesis strategies for HEOs.
• Identification of key future development points for HEOs in EMA.

Main Results:

• HEOs offer remarkable tunability and compositional flexibility, making them highly suitable for EMA.
• Key advantages are linked to intrinsic high-entropy properties, crystal structure, composition, and synthesis.
• Future development directions include dielectric genes, computational methods, integration, microstructure, and concept expansion.

Conclusions:

• HEOs represent a significant advancement in EMA materials.
• This work offers theoretical insights and technological references for high-performance HEO research in EMA.
• Connecting the HEO family with EMA functionality is crucial for future progress.