Tb-doped SBN single crystals

Zhang, P. L.; Zhong, W. L.; Song, Y.; Chen, H. C.

doi:10.1080/00150199308237889

Cited by 6 publications

(4 citation statements)

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“…Terbium (Tb) is one of the rare‐earth elements (REEs), and there are several reports about the particular effects of Tb ions on the electrical properties of ferroelectric oxides 21–23 . Zhang et al.…”

Section: Introductionmentioning

confidence: 99%

“…Zhang et al. found that the Tb ions modification can noticeably improve the piezoelectric and pyroelectric properties of Sr 1− x Ba x Nb 2 O 6 , decrease the transition temperature, and increase the diffuseness of the phase transition 21 . Chen et al.…”

Section: Introductionmentioning

confidence: 99%

“…Terbium (Tb) is one of the rare-earth elements (REEs), and there are several reports about the particular effects of Tb ions on the electrical properties of ferroelectric oxides. [21][22][23] Zhang et al found that the Tb ions modification can noticeably improve the piezoelectric and pyro-electric properties of Sr 1−x Ba x Nb 2 O 6 , decrease the transition temperature, and increase the diffuseness of the phase transition. 21 Chen et al reported that the leakage current and the driving force for domain back switching of BiFeO 3 films could be effectively reduced by Tb ions modification, which gives rise to a large piezoelectric coefficient.…”

Section: Introductionmentioning

confidence: 99%

“…[21][22][23] Zhang et al found that the Tb ions modification can noticeably improve the piezoelectric and pyro-electric properties of Sr 1−x Ba x Nb 2 O 6 , decrease the transition temperature, and increase the diffuseness of the phase transition. 21 Chen et al reported that the leakage current and the driving force for domain back switching of BiFeO 3 films could be effectively reduced by Tb ions modification, which gives rise to a large piezoelectric coefficient. 22 Zhai et al realized that the Tb ions modification can reduce grain size, lead to step-like grain growth, and enhance the temperature stabilities of piezoelectric properties of K 0.5 Na 0.5 NbO 3 (KNN) ceramics.…”

Section: Introductionmentioning

confidence: 99%

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Significantly enhanced dc electrical resistivity and piezoelectric properties of Tb‐modified CaBi₂Nb₂O₉ ceramics for high‐temperature piezoelectric applications

et al. 2022

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Bismuth layer–structured ferroelectric calcium bismuth niobate (CaBi2Nb2O9, CBN) is considered to be one of the most potential high‐temperature piezoelectric materials due to its high Curie temperature Tc of ∼940°C, but the drawbacks of low electrical resistivity at elevated temperature and low piezoelectric performance limit its applications as key electronic components at high temperature (HT). Herein, we report significantly enhanced dc electrical resistivity and piezoelectric properties of CBN ceramics through rare‐earth element Tb ions compositional adjustment. The nominal compositions of Ca1−xTbxBi2Nb2O9 (abbreviated as CBN‐100xTb) have been fabricated by conventional solid‐state reaction method. The composition of CBN‐3Tb exhibits a significantly enhanced dc electrical resistivity of 1.97 × 106 Ω cm at 600°C, which is larger by two orders of magnitude compared with unmodified CBN. The donor substitutions of Tb3+ ions for Ca2+ ions reduce the oxygen vacancy concentrations and increase the band‐gap energy, which is responsible for the enhancement of dc electric resistivity. The temperature‐dependent dc conduction properties reveal that the conduction is dominated by the thermally activated oxygen vacancies in the low‐temperature region (200–350°C) and by the intrinsic conduction in the HT region (350–650°C). The CBN‐3Tb also exhibits enhanced piezoelectric properties with a high piezoelectric coefficient d33 of ∼13.2 pC/N and a high Tc of ∼966°C. Moreover, the CBN‐3Tb exhibits good thermal stabilities of piezoelectric properties, remaining 97% of its room temperature value after annealing at 900°C. These properties demonstrate the great potentials of Tb‐modified CBN for high‐temperature piezoelectric applications.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%