Broadened ferromagnetic resonance range in ferrite by gradient composition design. Issue 18 (15th December 2019)

• Record Type: Journal Article
• Authors: Liu, Chuyang; Cao, Yufan; Zhang, Xiaohan; Ren, Hao; Zhang, Yujing; Zhang, Yanting; Zhao, Xinrui; Fang, Gang; Peng, Kangsen; Zou, Junding
• Is Part Of: Ceramics international. Volume 45:Issue 18(2019)Part A
• Page Start: 24900
• Page End: 24902
• Publication Date: 2019-12-15
• Subjects: Magnetic materials -- Ferromagnetic resonance -- Barium ferrite -- Gradient substitution -- Magnetocrystalline anisotropy; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2019.08.107
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: Magnetic materials with broad ferromagnetic resonance (FMR) range have great potential in microwave absorption field. In this work, M type barium ferrites with local chemical gradients were prepared by mixing and heating the ferrite powders with different Zr 4+ -Ni 2+ contents, constructing the locally inhomogeneous magnetocrystalline anisotropy field to widen the FMR range. The results show that ionic diffusion process starts significantly at 1000 °C. The mixed ferrite reheated at 1100 °C finally exhibits the broadest FMR range (7.32 GHz) because of the appropriate gradient composition design, which is much wider than that of the original uniformly substituted barium ferrites.