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Effect of addition of the CuO-Fe2O3 system on the electromagnetic wave absorbing properties of sintered ferrite

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Abstract

The effects of the addition of the CuO-Fe2O3 system as a liquid former on the microstructure and electromagnetic wave absorbing property of sintered Ni-Zn ferrite were investigated. The CuO-Fe2O3 system, a spinel ferrite, has its own magnetic property, which enables it to be used as an electromagnetic wave absorber. The CuO-Fe2O3 system was preferentially located at the grain boundary in the matrix of an Ni-Zn ferrite. This resulted in an increase in the total loss and a decrease in matching thickness. The centre frequency shift is presumed to occur because Ni-Zn ferrite with CuO-Fe2O3 behaves like a mixture of two ferrites with loss characteristics at the different frequency ranges.

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Authors and Affiliations

  1. Division of Ceramics, Korea Institute of Science and Technology, Cheongryang, PO Box 131, Seoul, Korea

    K. Y. Kim, W. S. Kim, Y. D. Ju & H. J. Jung

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  1. K. Y. Kim
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  2. W. S. Kim
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  3. Y. D. Ju
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  4. H. J. Jung
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Kim, K.Y., Kim, W.S., Ju, Y.D. et al. Effect of addition of the CuO-Fe2O3 system on the electromagnetic wave absorbing properties of sintered ferrite. J Mater Sci 27, 4741–4745 (1992). https://doi.org/10.1007/BF01166015

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  • DOI: https://doi.org/10.1007/BF01166015

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