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

Zong Yang Shen; Wen Qin Luo; Yanxue Tang; Shujun Zhang; Yueming Li

doi:10.1016/j.ceramint.2016.01.112

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

Zong Yang Shen
, Wen Qin Luo
, Yanxue Tang
, Shujun Zhang
, Yueming Li

Materials Research Institute (MRI)

Research output: Contribution to journal › Article › peer-review

65 Scopus citations

Abstract

Bismuth layer structural ceramics with a composition of CaBi₄Ti_3.95Nb_0.05O₁₅+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 (T_c=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.

Original language	English (US)
Pages (from-to)	7868-7872
Number of pages	5
Journal	Ceramics International
Volume	42
Issue number	6
DOIs	https://doi.org/10.1016/j.ceramint.2016.01.112
State	Published - May 1 2016

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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10.1016/j.ceramint.2016.01.112

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

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.",

author = "Shen, \{Zong Yang\} and Luo, \{Wen Qin\} and Yanxue Tang and Shujun Zhang and Yueming Li",

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T1 - Microstructure and electrical properties of Nb and Mn co-doped CaBi4Ti4O15 high temperature piezoceramics obtained by two-step sintering

AU - Shen, Zong Yang

AU - Luo, Wen Qin

AU - Tang, Yanxue

AU - Zhang, Shujun

AU - Li, Yueming

PY - 2016/5/1

Y1 - 2016/5/1

N2 - 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.

AB - 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.

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DO - 10.1016/j.ceramint.2016.01.112

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SP - 7868

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JO - Ceramics International

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IS - 6

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

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