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author:

Mo, S. (Mo, S..) [1] | Hu, S. (Hu, S..) [2] | Wang, N. (Wang, N..) [3] | Zhang, H. (Zhang, H..) [4] | Zhu, P. (Zhu, P..) [5] | Wen, X. (Wen, X..) [6] | Dai, S. (Dai, S..) [7] | Zhang, F. (Zhang, F..) [8] | Li, T. (Li, T..) [9] | Liu, J. (Liu, J..) [10] | Zheng, X. (Zheng, X..) [11]

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Abstract:

The good dielectric stability of BaTiO3-based ceramics in the wide temperature range is crucial and essential for the increasingly demanding capacitor applications, where the multilayer ceramics capacitors (MLCCs) are required to withstand the higher working temperature expected to reach 150°C or 200 °C. The developments of X8R/X8F- (−55°C–150°C, ΔC/C 25 °C ≤ ±15 %/±7.5 %) and X9R-type (−55°C–200°C, ΔC/C 25 °C ≤ ±15 %) MLCC with high capacitance are subjected to the dielectric ceramics with excellent temperature-stable dielectric properties and fine grains. Therefore, BaTiO3-based ceramics has been prepared via introducing Nb2O5, Na0.5Bi0.5TiO3 (BNT), and the sintering aids of MgO-Al2O3-SiO2 (MAS) cordierite glass to control the grain growth and form the core-shell structure in this work. For the 2 mol% Nb2O5 doped BaTiO3-based fine ceramics with dg ∼300 nm, the good dielectric properties at 1 kHz of εr ∼1535, tanδ ∼0.49 % are obtained together with high resistivity of 2.74 × 1013 Ω. cm, which meets X8R/X8F specification. Subsequently, the 10 mol% BNT has been introduced to the BaTiO3 based ceramics, the temperature stability is further improved to meet X9R specification. They exhibits the excellens dielectric properties of εr ∼1079, tanδ ∼1.35 % at 1 kHz and 9.84 % ≤ ΔC/C25°C ≤ 13.19 % over the temperature range of −60 °C–210 °C together with high resistivity of 3.39 × 1013 Ω.cm. This suggests that the present BaTiO3 based ceramics is a promising candidate for MLCCs to apply in the field of oil drilling, aerospace, automotive control system. © 2025

Keyword:

BaTiO3 Dielectric properties Grain growth MLCC X8F X9R

Community:

  • [ 1 ] [Mo S.]Institute of Advanced Ceramics, College of Materials Science and Engineering, Fuzhou University, University Town, 2 Xueyuan Road, Fuzhou, 350108, China
  • [ 2 ] [Hu S.]Institute of Advanced Ceramics, College of Materials Science and Engineering, Fuzhou University, University Town, 2 Xueyuan Road, Fuzhou, 350108, China
  • [ 3 ] [Wang N.]Institute of Advanced Ceramics, College of Materials Science and Engineering, Fuzhou University, University Town, 2 Xueyuan Road, Fuzhou, 350108, China
  • [ 4 ] [Zhang H.]Institute of Advanced Ceramics, College of Materials Science and Engineering, Fuzhou University, University Town, 2 Xueyuan Road, Fuzhou, 350108, China
  • [ 5 ] [Zhu P.]Institute of Advanced Ceramics, College of Materials Science and Engineering, Fuzhou University, University Town, 2 Xueyuan Road, Fuzhou, 350108, China
  • [ 6 ] [Wen X.]Technology Center of Xiamen Tungsten Co., Ltd, Xiamen, 361009, China
  • [ 7 ] [Dai S.]Fujian Basic Electronic Materials Co., Ltd, Longyan, 366300, China
  • [ 8 ] [Zhang F.]Fujian Basic Electronic Materials Co., Ltd, Longyan, 366300, China
  • [ 9 ] [Li T.]Fujian Basic Electronic Materials Co., Ltd, Longyan, 366300, China
  • [ 10 ] [Liu J.]Fujian Basic Electronic Materials Co., Ltd, Longyan, 366300, China
  • [ 11 ] [Zheng X.]Institute of Advanced Ceramics, College of Materials Science and Engineering, Fuzhou University, University Town, 2 Xueyuan Road, Fuzhou, 350108, China

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Source :

Ceramics International

ISSN: 0272-8842

Year: 2025

5 . 1 0 0

JCR@2023

CAS Journal Grade:2

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ESI Highly Cited Papers on the List: 0 Unfold All

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30 Days PV: 0

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