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Polaron conduction loss in microwave dielectric ceramics

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Abstract

It has been generally accepted that the product of the unloaded quality factor and resonant frequency is the universal parameter for comparison of dielectric resonators with different size.1,2 However, it is suggested in this study that this universal parameter should be modified due to the presence of the polarons. From the frequency dependence of the unloaded quality factor, it is possible to extract the factor determined only by the phonon scattering effects, and we denoted this parameter by Qs. It was found that the Qs parameter for ZrxSnzTiyO4 (ZST) and Ba(Zn1/3Ta2/3)O3 (BZT) ceramics showed constancy in the frequency range of 2–12 GHz, which supports the idea of polaron conduction loss contribution to the dielectric loss.

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Authors and Affiliations

  1. Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, 305-701, Taejon, Korea

    Seungbum Hong, Eunah Kim, Han Wook Song, Jongwan Choi, Dae-Weon Kim & Kwangsoo No

  2. Electronics and Telecommunications Research Institute, 305-701, Taejon, Korea

    Tae-Hong Kim, Jung-Rae Park & Jin-Woo Han

Authors
  1. Seungbum Hong
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  2. Eunah Kim
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  3. Han Wook Song
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  4. Jongwan Choi
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  5. Dae-Weon Kim
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  6. Kwangsoo No
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  7. Tae-Hong Kim
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  8. Jung-Rae Park
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  9. Jin-Woo Han
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Hong, S., Kim, E., Song, H.W. et al. Polaron conduction loss in microwave dielectric ceramics. Journal of Materials Research 14, 500–502 (1999). https://doi.org/10.1557/JMR.1999.0071

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  • DOI: https://doi.org/10.1557/JMR.1999.0071

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