Electrical properties of a Cr2O3-modified Na0.5Bi4.5Ti4O15-Na0.5Bi0.5TiO3 composite ceramic

Wu, Weifeng; Han, Yanshuo; Huang, Xuan; Du, Juan; Bai, Wangfeng; Wen, Fei; Wu, Wei; Zheng, Peng; Liang, Zheng; Zhang, Yang

doi:10.1007/s41779-020-00534-5

Cited by 4 publications

(3 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We also compare our finding with other Na 0.5 Bi 4.5 Ti 4 O 15 ‐based bismuth layer piezoelectric ceramics, as shown in Figure 6D. It can be seen from Figure 6D that both the piezoelectric coefficient and Curie temperature of Na 0.5 Bi 4.5 Ti 3.94– x Mn 0.06 Nb x O 15+ y ceramics with x = 0.08 mol have an advantage over the state‐of‐the‐art bismuth layer piezoelectric ceramic materials, which have great potential application prospects in extremely harsh high‐temperature environments 2,24,34,36–55 …”

Section: Resultsmentioning

confidence: 54%

“…(B) The relationship of d 33 , lattice constant b/a, and the Curie temperature with different Nb 5+ contents. (C) The temperature-dependent d 33 of Na 0.5 Bi 4.5 Ti 3.94-x Mn 0.06 Nb x O 15+y ceramics in the temperature range of 25 • C-450 • C. (D) The piezoelectric performance of Na 0.5 Bi 4.5 Ti 3.94-x Mn 0.06 Nb x O 15+y ceramics compared with other high-T c piezoelectric ceramicsbismuth layer piezoelectric ceramic materials, which have great potential application prospects in extremely harsh high-temperature environments 2,24,34,[36][37][38][39][40][41][42][43][44][45][46][47][48][49][50][51][52][53][54][55]. In summary, Na 0.5 Bi 4.5 Ti 3.94-x Mn 0.06 Nb x O 15+y ceramics were prepared by the conventional solid-state method.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Enhanced piezoelectric performance in Na_0.5Bi_4.5Ti₄O₁₅‐based bismuth‐layered ceramics by Nb/Mn doping modification

Luo

Zhang

et al. 2022

J Am Ceram Soc.

View full text Add to dashboard Cite

In this work, Na0.5Bi4.5Ti3.94–xMn0.06NbxO15+y bismuth‐layered ferroelectric ceramics were prepared by a solid‐state reaction method. The effect of Nb5+ content on crystal morphology, electrical properties, and piezoelectric performance were systematically investigated. The results show that the introduction of Nb5+ into Na0.5Bi4.5Ti3.94–xMn0.06NbxO15+y ceramics to replace Ti4+ increases the ratio of b/a lattice parameter, leading to the TiO6 octahedral distortion and the structural transformation tendency from the orthorhombic to tetragonal phase, which facilitates dipole movements of Na0.5Bi4.5Ti3.94–xMn0.06NbxO15+y ceramics. Therefore, the ferroelectric properties of Na0.5Bi4.5Ti3.94–xMn0.06NbxO15+y ceramics are improved, and an enhanced piezoelectric coefficient of 30 pC/N combining great temperature stability with d33 value higher than 25 pC/N in the temperature range of 25°C–450°C has been realized in Na0.5Bi4.5Ti3.94–xMn0.06NbxO15+y ceramics with x = 0.08 mol. Our work provides a good model for designing lead‐free ultrahigh Curie temperature piezoelectric devices that can be practically applied in extremely harsh environments.

show abstract

Section: Resultsmentioning

confidence: 54%

mentioning

confidence: 99%

Enhanced piezoelectric performance in Na_0.5Bi_4.5Ti₄O₁₅‐based bismuth‐layered ceramics by Nb/Mn doping modification

Luo

Zhang

et al. 2022

J Am Ceram Soc.

View full text Add to dashboard Cite

show abstract

“…In this study, Cr 2 O 3 was added to obtain a (Na 0.5 Bi 0.5 ) 0.95 Ca 0.05 Bi 4 Ti 4 O 15 + 0.2% Cr 2 O 3 material, and as expected, an excellent piezoelectric coefficient d 33 of 29 pC/N and a high T C of 655°C were achieved. This newly designed NBT‐based piezoceramic exhibits outstanding performance compared to most NBT‐modified materials as shown in Figure 1 10–34 . The effect of Cr 2 O 3 addition on the structure and dielectric, ferroelectric, and piezoelectric properties of the CNBT ceramics was further explored.…”

Section: Introductionmentioning

confidence: 99%

Enhanced electrical properties of Cr₂O₃ addition NBT‐based high‐temperature piezoelectric ceramics

2022

View full text Add to dashboard Cite

Owing to industrial and technological developments, there has been an increasing demand for piezoelectric ceramics that can function at temperatures of 500°C or higher. Na0.5Bi4.5Ti4O15 (NBT) with its high Curie temperature (TC) of 650°C is a typical bismuth layer–structured ferroelectric. However, its relatively low piezoelectric coefficient (d33 ∼ 16 pC/N) hinders its potential application at high temperatures. In this study, compositions of Ca0.05(Na0.5Bi0.5)0.95Bi4Ti4O15 with different additions of Cr2O3 (CNBT–Cr100x) were designed based on previous studies on Ca2+‐doped NBT piezoceramics, and the effects of the addition on the structural and electrical properties were investigated. The d33 value of CNBT–Cr20 was as high as 29 pC/N, almost twice higher than that of pure NBT ceramics. This increase was investigated in depth using X‐ray diffraction refinement and piezoelectric force microscopy in terms of intrinsic and extrinsic contributions. The Ps values of CNBT and CNBT–Cr20 were almost equal. The density of the domain walls of CNBT–Cr20 was significantly higher than that of CNBT, indicating that the increase of d33 of CNBT–Cr20 is mainly due to the increase in the extrinsic contribution. The CNBT–Cr20 ceramic exhibited excellent properties with a high TC of 655°C, a high d33 of 29 pC/N, and a resistivity high than 106 Ω cm at 500°C, demonstrating its potential for applications at high temperatures such as 500°C.

show abstract

A review of various ceramic pigment preparation and characterization methodologies for applications

et al. 2023

View full text Add to dashboard Cite

Electrical properties of a Cr2O3-modified Na0.5Bi4.5Ti4O15-Na0.5Bi0.5TiO3 composite ceramic

Cited by 4 publications

References 26 publications

Enhanced piezoelectric performance in Na_0.5Bi_4.5Ti₄O₁₅‐based bismuth‐layered ceramics by Nb/Mn doping modification

Enhanced piezoelectric performance in Na_0.5Bi_4.5Ti₄O₁₅‐based bismuth‐layered ceramics by Nb/Mn doping modification

Enhanced electrical properties of Cr₂O₃ addition NBT‐based high‐temperature piezoelectric ceramics

A review of various ceramic pigment preparation and characterization methodologies for applications

Contact Info

Product

Resources

About

Electrical properties of a Cr2O3-modified Na0.5Bi4.5Ti4O15-Na0.5Bi0.5TiO3 composite ceramic

Cited by 4 publications

References 26 publications

Enhanced piezoelectric performance in Na0.5Bi4.5Ti4O15‐based bismuth‐layered ceramics by Nb/Mn doping modification

Enhanced piezoelectric performance in Na0.5Bi4.5Ti4O15‐based bismuth‐layered ceramics by Nb/Mn doping modification

Enhanced electrical properties of Cr2O3 addition NBT‐based high‐temperature piezoelectric ceramics

A review of various ceramic pigment preparation and characterization methodologies for applications

Contact Info

Product

Resources

About

Enhanced piezoelectric performance in Na_0.5Bi_4.5Ti₄O₁₅‐based bismuth‐layered ceramics by Nb/Mn doping modification

Enhanced piezoelectric performance in Na_0.5Bi_4.5Ti₄O₁₅‐based bismuth‐layered ceramics by Nb/Mn doping modification

Enhanced electrical properties of Cr₂O₃ addition NBT‐based high‐temperature piezoelectric ceramics