The structure and electrical properties of Ca 0.6 (Li 0.5 Bi 0.5‐ x Pr x ) 0.4 Bi 2 Nb 2 O 9 high‐temperature piezoelectric ceramics

2019 ◽  
Vol 103 (1) ◽  
pp. 266-278 ◽  
Author(s):  
Dan Wang ◽  
Yugen Xu ◽  
Yulin Shi ◽  
Hongliang Wang ◽  
Xiaojun Wu ◽  
...  
Keyword(s):  
High Temperature ◽  
Electrical Properties ◽  
Piezoelectric Ceramics

Enhanced electrical properties of (Li,Ce) co-doped Sr(Na0.5Bi0.5)Bi4Ti5O18 high temperature piezoceramics

RSC Advances ◽  
2016 ◽  
Vol 6 (40) ◽  
pp. 33387-33392 ◽  
Author(s):  
Zhongran Yao ◽  
Ruiqing Chu ◽  
Zhijun Xu ◽  
Jigong Hao ◽  
Guorong Li
Keyword(s):  
High Temperature ◽  
Solid State ◽  
Electrical Properties ◽  
Solid State Reaction ◽  
Piezoelectric Ceramics ◽  
Solid State Reaction Method ◽  
Lead Free ◽  
Conventional Solid State Reaction ◽  
Reaction Method ◽  
Co Doped

Lead-free piezoelectric ceramics with the formula of Sr1−x(Li,Ce)x/2(Na0.5Bi0.5)Bi4Ti5O18 (LCSNBT-x, x = 0.0, 0.1, 0.2, 0.3, 0.4), were prepared by a conventional solid-state reaction method.

scholarly journals Enhanced Electrical Properties of Lead-Free Piezoelectric KNLN-BZ-BNT Ceramics With the Modification of Sm3+ Ions

2021 ◽  
Vol 8 ◽  
Author(s):  
Yi Quan ◽  
Lingyan Wang ◽  
Wei Ren ◽  
Jinyan Zhao ◽  
Jian Zhuang ◽  
...  
Keyword(s):  
Thermal Stability ◽  
High Temperature ◽  
Electrical Properties ◽  
Piezoelectric Properties ◽  
Piezoelectric Ceramics ◽  
High Thermal Stability ◽  
Lead Free ◽  
Environment Friendly ◽  
Good Thermal Stability ◽  
Good For

Environment-friendly lead-free piezoelectric ceramics with great properties and high thermal stability are desired in the industry. In this work, the Sm3+-modified lead-free 0.915(K0.45Na0.5Li0.05)NbO3–0.075BaZrO3–0.01(Bi0.5Na0.5)TiO3 (KNLN-BZ-BNT) ceramics are prepared. The piezoelectric properties are improved with the introduction of Sm3+, and the optimal properties (d33 = 325 pC/N and d33* = 384 pm/V) are achieved in the ceramic modified with 0.3 mol% Sm3+ ions. Meanwhile, this sample shows good thermal stability such that the values of d33* decreased less than 20% when the temperature raised from 30 to 180oC. These results show the Sm3+-modified KNLN-BZ-BNT ceramics are good for further applications even under high temperature.

Effect of (K0.5Ce0.5) complex on the electrical properties of lead-free Bi4Ti2.86W0.14O12 high-temperature piezoelectric ceramics

2020 ◽  
pp. 1-8
Author(s):  
Zong-Yang Shen ◽  
Zhipeng Zhang ◽  
Chen Qin ◽  
Wenqin Luo ◽  
Fusheng Song ◽  
...  
Keyword(s):  
High Temperature ◽  
Electrical Properties ◽  
Piezoelectric Ceramics ◽  
Lead Free

Abstract

scholarly journals Effects of Oxide Additives on the Phase Structures and Electrical Properties of SrBi4Ti4O15 High-Temperature Piezoelectric Ceramics

Materials ◽  
2021 ◽  
Vol 14 (20) ◽  
pp. 6227
Author(s):  
Shaozhao Wang ◽  
Huajiang Zhou ◽  
Daowen Wu ◽  
Lang Li ◽  
Yu Chen
Keyword(s):  
High Temperature ◽  
Electrical Properties ◽  
Space Charge ◽  
Low Frequency ◽  
Piezoelectric Ceramics ◽  
Crystalline Lattice ◽  
Orthorhombic Symmetry ◽  
Conventional Solid State Reaction ◽  
Cell Parameters ◽  
Phase Structures

In this work, SrBi4Ti4O15 (SBT) high-temperature piezoelectric ceramics with the addition of different oxides (Gd2O3, CeO2, MnO2 and Cr2O3) were fabricated by a conventional solid-state reaction route. The effects of oxide additives on the phase structures and electrical properties of the SBT ceramics were investigated. Firstly, X-ray diffraction analysis revealed that all these oxides-modified SBT ceramics prepared presented a single SrBi4Ti4O15 phase with orthorhombic symmetry and space group of Bb21m, the change in cell parameters indicated that these oxide additives had diffused into the crystalline lattice of SBT and formed solid solutions with it. The SBT ceramics with the addition of MnO2 achieved a high relative density of up to 97%. The temperature dependence of dielectric constant showed that the addition of Gd2O3 could increase the TC of SBT. At a low frequency of 100 Hz, those dielectric loss peaks appearing around 500 °C were attributed to the space-charge relaxation as an extrinsic dielectric response. The synergetic doping of CeO2 and Cr2O3 could reduce the space-charge-induced dielectric relaxation of SBT. The piezoelectricity measurement and electro-mechanical resonance analysis found that Cr2O3 can significantly enhance both d33 and kp of SBT, and produce a higher phase-angle maximum at resonance. Such an enhanced piezoelectricity was attributed to the further increased orthorhombic distortion after Ti4+ at B-site was substituted by Cr3+. Among these compositions, Sr0.92Gd0.053Bi4Ti4O15 + 0.2 wt% Cr2O3 (SGBT-Cr) presented the best electrical properties including TC = 555 °C, tan δ = 0.4%, kp = 6.35% and d33 = 28 pC/N, as well as a good thermally-stable piezoelectricity that the value of d33 was decreased by only 3.6% after being annealed at 500 °C for 4 h. Such advantages provided this material with potential applications in the high-stability piezoelectric sensors operated below 500 °C.

Effects of Bi excess on the structure and electrical properties of high-temperature BiFeO3–BaTiO3 piezoelectric ceramics

2012 ◽  
Vol 24 (5) ◽  
pp. 1685-1689 ◽  
Author(s):  
Changrong Zhou ◽  
Huabin Yang ◽  
Qin Zhou ◽  
Guohua Chen ◽  
Weizhou Li ◽  
...  
Keyword(s):  
High Temperature ◽  
Electrical Properties ◽  
Piezoelectric Ceramics
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