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High-frequency magnetic properties of Co-Ti substituted barium ferrites prepared by modified chemical coprecipitation method

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Abstract

Co-Ti substituted barium ferrites were prepared by a modified chemical coprecipitation method. Microstructures and high-frequency magnetic properties were investigated by X-ray diffraction (XRD) transmission electron microscopy (TEM) scanning electron microscopy (SEM) and measurements of complex permeability spectra. Barium ferrites with Co-Ti substitution x=1.0 have the highest permeability μ′ and the lowest magnetic resonant frequency fros and fros can be changed continuously with changing Co-Ti substitution in the hyper-frequency region while μ′′ keeps its high value at the same time. A higher sintering temperature corresponds to higher μ′ and lower fros due to the grain growth. The d.c. electrical resistivity for all samples was above 108 Ω cm.

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Authors and Affiliations

  1. State Key Lab of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, Beijing, 100084, People's Republic of China

    Changsheng Wang & Longtu Li

Authors
  1. Changsheng Wang
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  2. Longtu Li
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  3. Ji Zhou
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  4. Xiwei Qi
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  5. Zhenxing Yue
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Wang, C., Li, L., Zhou, J. et al. High-frequency magnetic properties of Co-Ti substituted barium ferrites prepared by modified chemical coprecipitation method. Journal of Materials Science: Materials in Electronics 13, 713–716 (2002). https://doi.org/10.1023/A:1021560920450

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