Recent Progress in Iron-Based Microwave Absorbing Composites: A Review and Prospective

Area of Science:

• Materials Science
• Electromagnetics
• Nanotechnology

Background:

• Electromagnetic radiation pollution is a growing concern in civil and military communication.
• Iron (Fe)-based magnetic absorbent particles are promising due to superior magnetic properties.
• Challenges include poor impedance matching, oxidation, high density, and skin effect in Fe particles.

Purpose of the Study:

• To review recent progress in Fe-based electromagnetic wave absorbing materials.
• To discuss preparation methods, absorbing properties, and mechanisms.
• To provide insights into future development directions for efficient absorbers.

Main Methods:

• Review of recent research reports on Fe-based electromagnetic absorbing materials.
• Analysis of different morphologies of Fe and Fe-based composite absorbers.
• Discussion of absorbing properties and mechanisms.

Main Results:

• Fe-based materials are effective microwave absorbers.
• Morphological structure design and multi-component composites enhance performance.
• Strategies address impedance matching, oxidation, density, and skin effect issues.

Conclusions:

• Fe-based microwave absorbing materials are a key area of research.
• Further development is needed for lightweight, thin, and high-performance absorbers.
• This review offers a reference for developing advanced electromagnetic wave absorption solutions.