Design, fabrication and dielectric properties in core-double shell BaTiO3-based ceramics for MLCC application

Hua Hao, Mengying Liu, Hanxing Liu, Shujun Zhang, Xin Shu, Ting Wang, Zhonghua Yao, Minghe Cao

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19 Scopus citations

Abstract

BaTiO3-based ceramics with a core-double shell structure were fabricated by precipitation and the sol-gel method. Bi(Zn1/2Ti1/2)O3-BaTiO3 (BZT-BT) or Nb oxide was chosen to be the shell-I (inner layer) or shell-II (outer layer) composition. The structure and dielectric properties were investigated by X-ray diffraction (XRD), HRTEM (High Resolution Transmission Electron Microscopy) and electron probe micro analysis (EPMA), with different core to shell ratio (nc/ns). Compared with the designed composition BT-Nb-(0.2BZT-0.8BT), BT-(0.2BZT-0.8BT)-Nb was found to possess improved dielectric temperature stability, where the capacitance variation ΔC/C 蠆 ±15% was achieved over a temperature range of -60-155°C, with the dielectric constant and dielectric loss being in the order of 1860 and 0.011 at room temperature.

Original languageEnglish (US)
Pages (from-to)8868-8876
Number of pages9
JournalRSC Advances
Volume5
Issue number12
DOIs
StatePublished - 2015

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

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    Hao, H., Liu, M., Liu, H., Zhang, S., Shu, X., Wang, T., Yao, Z., & Cao, M. (2015). Design, fabrication and dielectric properties in core-double shell BaTiO3-based ceramics for MLCC application. RSC Advances, 5(12), 8868-8876. https://doi.org/10.1039/c4ra13367f