Review on recent advances of ferrous materials: From synthesis techniques to electromagnetic wave absorption performance

With the booming development of electronic information and 5G communication technology, electromagnetic radiation pollution is posing a huge threat and damage to humanity. Developing high performance electromagnetic wave (EMW) absorbing materials is an effective method to solve the above issue, thus has attracted the attention of many researchers. As a kind of typical magnetic material, ferrite plays an extremely important role in the design of high performance EMW absorbing composite materials. Thus we focus on the synthesis process of ferrites and their composites, introduce recent advances of the application of high temperature solid-phase method, sol-gel method, chemical co-precipitation method and solvent thermal method successively in the preparation of high performance EMW absorbers. The review aim to help researchers understand the advantages and disadvantages of ferrite based EMW absorbers, which fabricated through these methods. Meanwhile, this review can also provide important guidance and reference for researchers to design high performance EMW absorption materials based on ferrite.