Magnetic, dielectric and microwave absorption properties of rare earth doped Ni-Co and Ni-Co-Zn spinel ferrites
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- 作者：Charalampos Stergiou stergiou@cperi.certh.gr
- 关键词：Magnetic materials ; Ceramics ; Magnetic properties ; Dielectric properties
- 刊名：Journal of Magnetism and Magnetic Materials
- 出版年：2017
- 出版时间：15 March 2017
- 年：2017
- 卷：426
- 期：Complete
- 页码：629-635
- 全文大小：632 K
- 卷排序：426
文摘
Due to cation distribution, magnetic anisotropy drops in Y and La doped samples. Microwave permeability spectra shift to lower frequencies with rare earth doping. Permittivity is increased due to crystal modifications, creating dipoles. Return losses above 40 dB from 4 to 19 GHz are attained when thickness equals λ/4. The multiple reflections cancellation is favoured by high imaginary μ′′.