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The effect of V2O5 on the sintability and physical properties of Bi2O3-NiO-Nb2O5 and Bi2O3-ZnO-Nb2O5 temperature-stable dielectrics

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Abstract

The sintering temperature of the bismuth-based temperature-stable dielectrics (BNN-BZN) is reduced down to 850 °C with 1.0 wt % of V2O5, which is the lowest to our knowledge. The effect of dopant is studied in detail. The V2O5 seems to provide an eutectic melt below the sintering temperature to increase the sinterability. A composite character was observed with 1.0 wt % of V2O2 doping, while a new solid-solution phase was found without or fewer amounts of additive. Nevertheless, the obtained physical property of the sample with 1.0 wt % of V2O5 is promising. Following combination of physical properties is obtained consistently without any quenching procedure; dielectric constant >95, Q ∼ 2000, T.C. = −8.6 ppm (30–100 °C), and specific resistivity = 1012Ω cm.

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Authors and Affiliations

  1. Ceramics Div. KIST, P. O. Box, 131 CheongRyang, 130-650, Seoul, Korea

    Kyeong Ae Yee, Kyoung Ran Han & Hyo Tae Kim

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  1. Kyeong Ae Yee
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  2. Kyoung Ran Han
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  3. Hyo Tae Kim
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Correspondence to Kyeong Ae Yee.

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Yee, K.A., Han, K.R. & Kim, H.T. The effect of V2O5 on the sintability and physical properties of Bi2O3-NiO-Nb2O5 and Bi2O3-ZnO-Nb2O5 temperature-stable dielectrics. Journal of Materials Science 34, 4699–4704 (1999). https://doi.org/10.1023/A:1004697929795

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