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Microstructure and electrical properties of Nb and Mn co-doped CaBi4Ti4O15 high temperature piezoceramics obtained by two-step sintering

Journal Article


Abstract


  • Bismuth layer structural ceramics with a composition of CaBi4Ti3.95Nb0.05O15+0.2 wt% MnO2 (CBTN–Mn) were prepared by a two-step sintering (TSS) approach. The effect of sintering process on the microstructure and its relationship with the electrical properties of the CBTN–Mn ceramics was investigated. A dense microstructure with small and homogeneous grains was obtained under an optimized two-step sintering condition, leading to a strongly enhanced piezoelectric constant (d33=27 pC/N). In addition, this ceramic also possesses high Curie temperature (Tc=790 °C), low dielectric loss (tan δ=0.2%) and high dc resistivity (ρ=5.5×106 Ω cm at 500 °C), indicating its potential for high temperature piezoelectric sensing applications.

UOW Authors


  •   Shen, Zongyang (external author)
  •   Luo, Wen-Qin (external author)
  •   Tang, Yanxue (external author)
  •   Zhang, Shujun
  •   Li, Yueming (external author)

Publication Date


  • 2016

Citation


  • Shen, Z., Luo, W., Tang, Y., Zhang, S. & Li, Y. (2016). Microstructure and electrical properties of Nb and Mn co-doped CaBi4Ti4O15 high temperature piezoceramics obtained by two-step sintering. Ceramics International, 42 (6), 7868-7872.

Scopus Eid


  • 2-s2.0-84957026311

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/2836

Number Of Pages


  • 4

Start Page


  • 7868

End Page


  • 7872

Volume


  • 42

Issue


  • 6

Place Of Publication


  • United Kingdom

Abstract


  • Bismuth layer structural ceramics with a composition of CaBi4Ti3.95Nb0.05O15+0.2 wt% MnO2 (CBTN–Mn) were prepared by a two-step sintering (TSS) approach. The effect of sintering process on the microstructure and its relationship with the electrical properties of the CBTN–Mn ceramics was investigated. A dense microstructure with small and homogeneous grains was obtained under an optimized two-step sintering condition, leading to a strongly enhanced piezoelectric constant (d33=27 pC/N). In addition, this ceramic also possesses high Curie temperature (Tc=790 °C), low dielectric loss (tan δ=0.2%) and high dc resistivity (ρ=5.5×106 Ω cm at 500 °C), indicating its potential for high temperature piezoelectric sensing applications.

UOW Authors


  •   Shen, Zongyang (external author)
  •   Luo, Wen-Qin (external author)
  •   Tang, Yanxue (external author)
  •   Zhang, Shujun
  •   Li, Yueming (external author)

Publication Date


  • 2016

Citation


  • Shen, Z., Luo, W., Tang, Y., Zhang, S. & Li, Y. (2016). Microstructure and electrical properties of Nb and Mn co-doped CaBi4Ti4O15 high temperature piezoceramics obtained by two-step sintering. Ceramics International, 42 (6), 7868-7872.

Scopus Eid


  • 2-s2.0-84957026311

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/2836

Number Of Pages


  • 4

Start Page


  • 7868

End Page


  • 7872

Volume


  • 42

Issue


  • 6

Place Of Publication


  • United Kingdom