Effect of the processing temperature on the electrical properties of lead-free 0.965Bi0.5Na0.5TiO3–0.035BaTiO3 piezoelectric ceramics synthesized by sol–gel method

2019 ◽  
Vol 90 (3) ◽  
pp. 643-652 ◽  
Author(s):  
Muhammad Munir ◽  
Muhammad Habib ◽  
Salman Ali Khan ◽  
Ali Hussain ◽  
Ibrahim Qazi ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Sol Gel ◽  
Piezoelectric Ceramics ◽  
Lead Free ◽  
Processing Temperature ◽  
Gel Method ◽  
Sol Gel Method

KNN-BF Lead-Free Piezoelectric Ceramics Synthesized by Sol-Gel Method

2015 ◽  
Vol 740 ◽  
pp. 3-6
Author(s):  
Guo Yuan Cheng ◽  
Xing Hua Fu ◽  
Xin Jin ◽  
Wen Hong Tao ◽  
Yu Qin Qiang
Keyword(s):  
Comparative Analysis ◽  
Citric Acid ◽  
Dielectric Loss ◽  
Sintering Temperature ◽  
Sol Gel ◽  
Piezoelectric Ceramics ◽  
Lead Free ◽  
Gel Method ◽  
Sol Gel Method ◽  
Metal Chelator

KNN-BF piezoelectric ceramics synthesized by sol-gel method in this experiment. By controlling bismuth and iron content in the system to study effects of them. We selected citric acid as metal chelator and ethylene glycol as esterification agent. PH maintained 5-6 during preparation of the sol. Sintering temperature of ceramic selected 1100°C. Preparation ceramics under these conditions and comparative analysis, the structure of ceramics is single perovskite and shap of crystals are square block. With the increase of x, properties of ceramics firstly increases and then decreases: d33, εr, Qm, Kpreaching the maximum, values of them were 136pC/N, 630(f =1KHz), 212, 0.41 respectively; dielectric loss to minimum is 0.07(f =1KHz); at this point, ceramics had best performance.

Composition dependence of phase structure and electrical properties of BiMnO3-modified Bi0.5(Na0.8K0.2)0.5TiO3 thin films

RSC Advances ◽  
2015 ◽  
Vol 5 (77) ◽  
pp. 62713-62718 ◽  
Author(s):  
Peng Li ◽  
Wei Li ◽  
Jiwei Zhai ◽  
Bo Shen ◽  
Huarong Zeng ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Thin Films ◽  
Electrical Properties ◽  
Phase Structure ◽  
Composition Dependence ◽  
Sol Gel ◽  
Lead Free ◽  
Gel Method ◽  
Sol Gel Method ◽  
Si Substrates

Lead-free (1 − x)Bi0.5(Na0.8K0.2)0.5TiO3-xBiMnO3 (BNKT-xBMO, 0 < x < 0.025) thin films were deposited on Pt/Ti/SiO2/Si substrates by a sol–gel method, and the effects of BiMnO3 addition on the crystal structure and electrical properties were systematically investigated.

The Preparation and Properties of (Na0.5+xK0.5-2xLix)NbO3 Lead-Free Piezoelectric Ceramics

2014 ◽  
Vol 602-603 ◽  
pp. 826-829
Author(s):  
Hong Yun Ma ◽  
Yan Gai Liu ◽  
Jin Qiu Zhao ◽  
Zhao Hui Huang ◽  
Ming Hao Fang
Keyword(s):  
Phase Composition ◽  
Piezoelectric Properties ◽  
Ferroelectric Properties ◽  
Sol Gel ◽  
Piezoelectric Ceramics ◽  
Lead Free ◽  
Piezoelectric Constant ◽  
Pressureless Sintering ◽  
Gel Method ◽  
Sol Gel Method

In this paper, the KNN powders with Li+ substituted (K0.5Na0.5)+ were prepared by the sol-gel method in order to make powders pure, (Na0.50+xK0.50-2xLix) -NbO3 (x=0, 0.04, 0.06, 0.08) ceramics were prepared by pressureless sintering. The phase composition of powders was determined by XRD. The effects of the Li+ substitution on piezoelectric and ferroelectric properties of ceramics were systematically studied for determining optimal Li+ content. Li+ can significantly increase the piezoelectric constant of ceramic. When Li+ content was 0.04, piezoelectric properties of ceramics were the best, d33=115 pC/N, Pr=6.35 μC/cm2, Ec=14.24 kV/cm.

scholarly journals Influences of protective atmosphere on the characterization and properties of NaSr2Nb5O15 lead-free piezoelectric ceramics by sol–gel method

2015 ◽  
Vol 38 (6) ◽  
pp. 1479-1486 ◽  
Author(s):  
TIAN-HANG ZHANG ◽  
YAN-GAI LIU ◽  
JIN-QIU ZHAO ◽  
ZHAO-HUI HUANG ◽  
MING-HAO FANG
Keyword(s):  
Sol Gel ◽  
Piezoelectric Ceramics ◽  
Lead Free ◽  
Protective Atmosphere ◽  
Gel Method ◽  
Sol Gel Method

Synthesis and electrical properties of lead-free piezoelectric Bi0.5Na0.5TiO3 thin films prepared by Sol-Gel method

2018 ◽  
Vol 38 (4) ◽  
pp. 1450-1455 ◽  
Author(s):  
S. Abou Dargham ◽  
F. Ponchel ◽  
N. Abboud ◽  
M. Soueidan ◽  
A. Ferri ◽  
...  
Keyword(s):  
Thin Films ◽  
Electrical Properties ◽  
Sol Gel ◽  
Lead Free ◽  
Gel Method ◽  
Sol Gel Method

Low-Temperature Sintering and Enhanced Piezoelectric Properties in KNN-LTS Nanopowder Prepared via a Low-Cost Water-Based Sol-Gel Method

2014 ◽  
Vol 602-603 ◽  
pp. 795-799
Author(s):  
Yu Huan ◽  
Xiao Hui Wang ◽  
Long Tu Li
Keyword(s):  
Electrical Properties ◽  
High Performance ◽  
Low Cost ◽  
Sol Gel ◽  
Average Particle Size ◽  
Lead Free ◽  
Average Particle ◽  
Gel Method ◽  
Sol Gel Method ◽  
Water Based

nanoscale lead-free perovskite powders with a composition of (Na0.52K0.4425Li0.0375)(Nb0.9125Ta0.0375Sb0.05)O3 (KNN-LTS) have been synthesized via a low-cost water-based sol-gel method, to reduce the sintering temperature and enhance the electrical properties. KNN-LTS nanopowders with average particle size of about 20 nm are obtained by citrate precursor sol-gel process, where Nb (OH)5 and Sb2O3 are used to replace the costly mental alkoxides. The sol-gel derived nanopowders can be densified at lower temperature of 940 °C and exhibited excellent electrical properties after sintering at 1020 °C (d33 = 396 pC/N, kp = 50.1% = 1882 and tanδ = 0.02), providing a tremendous potential method for high-performance lead-free ceramics preparation.

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