Journal
CERAMICS INTERNATIONAL
Volume 45, Issue 18, Pages 24900-24902Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2019.08.107
Keywords
Magnetic materials; Ferromagnetic resonance; Barium ferrite; Gradient substitution; Magnetocrystalline anisotropy
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Funding
- National Natural Science Foundation of China [51802155, 51801103, 51471150]
- Natural Science Foundation of Jiangsu Province [BK20180443]
- Shuangchuang Doctor Foundation of Jiangsu Province
- Aeronautical Science Foundation of China [2018ZF52078]
- visiting scholar fund of state key laboratory of silicon materials [SKL2019-09]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
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Magnetic materials with broad ferromagnetic resonance (FMR) range have great potential in microwave ab. sorption field. In this work, M type barium ferrites with local chemical gradients were prepared by mixing ant heating the ferrite powders with different Zr4+-Ni2+ contents, constructing the locally inhomogeneous mag netocrystalline anisotropy field to widen the FMR range. The results show that ionic diffusion process start: significantly at 1000 degrees C. The mixed ferrite reheated at 1100 degrees 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 on ginal uniformly substituted barium ferrites.
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