Electromagnetic Absorption by Magnetic Oxide Nanomaterials: A Review
Longxin Wang, Yishan Wang, Jialei Lu, Xu Yan, Dongdong Liu, Xueqian Zhang, Xiaoxiao Huang, Guangwu Wen
Abstract
With the rapid development of electronic equipment and communication technology, radiation pollution caused by electromagnetic waves has become a serious social nuisance. Based on this, the development of high-performance electromagnetic wave-absorbing materials has become a research hotspot. Among them, Fe 3 O 4, as a traditional ferrite-based wave-absorbing material, has the advantages of abundant natural resources, low environmental pollution, and deep wave-absorbing strength. Therefore, the direct utilization of Fe 3 O 4 as a wave-absorbing material or as a raw material for the preparation of wave-absorbing materials has become a research direction for researchers. This paper first introduces the basic theories and evaluation parameters related to wave absorption and then reviews the research progress of pure Fe 3 O 4 wave-absorbing materials with key structural dimensions below 500 nm and related composite wave-absorbing materials by summarizing the reports of electromagnetic wave-absorbing materials related to Fe 3 O 4 in recent years. Finally, the development prospect of Fe 3 O 4 -based wave-absorbing materials is introduced.