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0.3–3 GHz magneto-dielectric properties of nanostructured NiZnCo ferrite from hydrothermal process

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Abstract

A simple hydrothermal route with cetyltrimethylammonium bromide was proposed for directly synthesizing single-crystalline NiZnCo ferrite at 160 °C. X-ray diffraction patterns and micrographs indicate that products consist of spinel ferrite nanocrystals. The dielectric constant of NiZnCo ferrite is about 11 and the imaginary part of complex permittivity is 1.3. The saturation magnetization of Ni0.54Zn0.48Fe1.98O4 increases from 41.36 to 73.9 emu/g for Ni0.55Zn0.46Fe1.98O4 with a cobalt stoichiometry of 0.01. The real part μ′ of complex permeability for NiZnCo ferrite reaches 3 at 1 GHz. The imaginary part μ″ of NiZnCo ferrite has values higher than 1.2 within 0.7–3 GHz. Through the incorporation of the magnetic fillers, the low dielectric constant of the composites may meet the requirements of impedance matching to achieve maximal absorption of the electromagnetic energy in GHz frequency range.

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Acknowledgments

This work was supported by the foundation of China ‘211’ engineering construction.

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Authors and Affiliations

  1. Engineering Research Center of Nano-Geomaterials of Ministry of Education, China University of Geosciences, 430074, Wuhan, People’s Republic of China

    Xiang Shen

  2. Faculty of Material Science and Chemical Engineering, China University of Geosciences, 430074, Wuhan, People’s Republic of China

    Xiang Shen, Xiang Yang, Liqiang Lu & Liang Huang

  3. School of Environmental Studies, China University of Geosciences, 430074, Wuhan, People’s Republic of China

    Yanxin Wang

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  1. Xiang Shen
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Correspondence to Xiang Shen.

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Shen, X., Wang, Y., Yang, X. et al. 0.3–3 GHz magneto-dielectric properties of nanostructured NiZnCo ferrite from hydrothermal process. J Mater Sci: Mater Electron 21, 630–634 (2010). https://doi.org/10.1007/s10854-009-9968-2

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