Dielectric behaviors of Nb 2O 5-Co 2O 3 doped BaTiO 3-Bi(Mg 1/2Ti 1/2)O 3 ceramics

Bo Xiong, Hua Hao, Shujun Zhang, Hanxing Liu, Minghe Cao, Zhiyong Yu

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19 Scopus citations

Abstract

Nb 2O 5 and Nb-Co doped 0.85BaTiO 3-0. 15Bi(Mg 1/2Ti 1/2)O 3 (0.85BT-0.15BMT) ceramics were investigated. From XRD patterns, undesired phase was observed when the (Nb 2O 5/Nb-Co) doping levels exceed 3 wt.%/2 wt.%, giving rise to the deteriorate dielectric constant. The 0.85BT-0.15BMT ceramics doped with 2 wt.%Nb 2O 5 was found to possess a moderate dielectric constant (ε ∼ 1000) and low dielectric loss (tan δ = 0.9%) at room temperature and 1 kHz, showing flat dielectric behavior over the temperature range from -55 to 155°C. It was found that the formation of core-shell structure in the BT based ceramics is controlled by the doping sequence of Nb- and Bi-oxides.

Original languageEnglish (US)
Pages (from-to)S45-S48
JournalCeramics International
Volume38
Issue numberSUPPL. 1
DOIs
StatePublished - Jan 2012

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Process Chemistry and Technology
  • Surfaces, Coatings and Films
  • Materials Chemistry

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