scholarly journals The (1-x)BiFeO3-xBaTiO3-Bi(Zn0.5Ti0.5)O3 high temperature lead-free piezoelectric ceramics with strong piezoelectric properties

2021 ◽  
Author(s):  
Yuanyuan Sun ◽  
Huabin Yang ◽  
Jiwen Xu ◽  
Weiran Huang ◽  
Minhong Jiang ◽  
...  
Keyword(s):  
High Temperature ◽  
Curie Temperature ◽  
Piezoelectric Properties ◽  
Ferroelectric Properties ◽  
Temperature Fields ◽  
Depolarization Temperature ◽  
Ceramic Structure ◽  
Low Dielectric ◽  
Tan Δ ◽  
Piezoelectric Performance

Abstract The structure, microstructure, piezoelectric properties, ferroelectric properties and Curie temperature of (1- x )BiFeO 3 - x BaTiO 3 -Bi(Zn 0.5 Ti 0.5 )O 3 +MnO 2 +Li 2 CO 3 ceramics were investigated experimentally by improved solid-state reaction approach. The crystalline structures were examined by X-ray diffractometry. When x = 0.3, the rhombohedral and pseudocubic phases coexist in the ceramic structure. It is considered that the morphotropic phase boundary was formed here. At the same time, the piezoelectric performance d 33 , Curie temperature T C , and depolarization temperature are as high as 184 pC/N, 550°C, 530°C at x = 0.3, respectively. It is worth noting that when x = 0.24, the ceramics have a high T C = 580°C and low dielectric loss tan δ = 1.9%. These results show that the BFBT-BZT system ceramics are applicable ceramics with high piezoelectric properties in high temperature fields.

Enhanced Piezoelectric Properties of CaBi2Nb2O9 with Eu Modification and Templated Grain Growth

2012 ◽  
Vol 512-515 ◽  
pp. 1367-1371 ◽  
Author(s):  
Huan Bei Chen ◽  
Ji Wei Zhai
Keyword(s):  
Curie Temperature ◽  
Grain Growth ◽  
Piezoelectric Properties ◽  
Material System ◽  
Templated Grain Growth ◽  
Promising Candidate ◽  
High Tc ◽  
Curie Temperature Tc ◽  
Piezoelectric Performance ◽  
The Eu

Calcium bismuth niobate (CaBi2Nb2O9, CBN) is a high Curie temperature (Tc) piezoelectric material, however, their piezoelectric properties are very poor. In order to improve the piezoelectric performance of CBN, the Eu modification and texture method (templated grain growth, TGG) were applied in this material system. The piezoelectric properties of CBN ceramics were significantly enhanced by Eu modification. The 5mol% Eu dopants in CBN ceramics have a higher piezoelectric constant and higher Tc (d33=12.8pC/N, Tc=945°C) than that of undoped CBN ceramics (d33=6.2pC/N, Tc=930°C). Highly textured 5mol% Eu doped CBN ceramics with 92% Lotgering factor were obtained by the TGG technique. The piezoelectric properties of textured and modified CBN ceramics are anisotropic on different directions of perpendicular (d33=0.1pC/N) and parallel (d33=20.5pC/N) to tape stacking direction. Furthermore, they had excellent thermostable piezoelectric properties from room temperature to near Curie temperature. The textured Eu modified CBN ceramics with high Tc and high piezoelectric properties might be a promising candidate for high-temperature piezoelectric applications.

Crystal Growth and Electrical Properties of Na0.5Bi0.5TiO3-BaTiO3 Lead-Free Ferroelectric Piezocrystals

2009 ◽  
Vol 421-422 ◽  
pp. 17-20
Author(s):  
Chao Chen ◽  
Xiang Yong Zhao ◽  
Hong Liu ◽  
Wen Wei Ge ◽  
Hao Su Luo ◽  
...  
Keyword(s):  
Solid Solution ◽  
Crystal Growth ◽  
Electrical Properties ◽  
Crystal Orientation ◽  
Ferroelectric Properties ◽  
Lead Free ◽  
Depolarization Temperature ◽  
Dielectric Maximum ◽  
Top Seeded Solution Growth ◽  
Piezoelectric Performance

(1-x)(Na0.5Bi0.5)TiO3-xBaTiO3 (abbreviated as NBBT100(1-x)/100x or NBBT100x) solid solution single crystals with x=0, 0.06, 0.08, 0.10, 0.20, 1.0 were grown using top-seeded solution growth (TSSG) method. Dielectric, piezoelectric and ferroelectric properties of NBBT crystals were investigated as a function of temperature, frequency, composition and crystal orientation. The temperature (Tm) corresponding to dielectric maximum and the depolarization temperature (Td) decrease with increasing x. The <001> oriented NBBT90/10 single crystal shows excellent piezoelectric performance with piezoelectric constant (d33) value about 275pC/N and exhibits relatively smaller coercive field (Ec) of 2.49 kV/mm and dielectric loss tanδ of 2.9 %, indicating a more adaptive engineered domain structure.

Ferroelectric Properties and Internal Friction in Doped PZT Ceramics

2015 ◽  
Vol 644 ◽  
pp. 171-174
Author(s):  
Dariusz Bochenek ◽  
Przemysław Niemiec ◽  
Radosław Zachariasz ◽  
Ryszard Skulski
Keyword(s):  
High Temperature ◽  
Internal Friction ◽  
Ferroelectric Properties ◽  
Low Frequency ◽  
Electric Permittivity ◽  
Pressing Method ◽  
Pzt Ceramics ◽  
Low Dielectric ◽  
Temperature Ranges ◽  
Similar Temperature

Multicomponent PZT-type solid solution with composition: Pb0.975Ba0.01Ca0.01Sr0.005 (Zr0.52Ti0.48)O3+1.4wt.%Bi2O3+0.3wt.%GeO obtained by hot uniaxial pressing method is described in this paper. There are presented the results of studies of structural, dielectric and internal friction of obtained multicomponent PZT-type ceramics. It has been stated that the dielectric anomalies and internal friction anomalies are observed in similar temperature ranges. Obtained PZT-type ceramics have high value of the dielectric permittivity and low dielectric losses. The high temperature of phase transition and high value of electric permittivity allow considering this material as a base for low frequency and high temperature electromechanical transducers.

Advances in the modification of the contradictory relationship between piezoelectricity and Curie temperature: simultaneous realization of large piezoelectricity and high Curie temperature in potassium sodium niobate-based ferroelectrics

2020 ◽  
Vol 8 (28) ◽  
pp. 9506-9510 ◽  
Author(s):  
Jian Ma ◽  
Juan Wu ◽  
Bo Wu ◽  
Wenjuan Wu
Keyword(s):  
High Temperature ◽  
Curie Temperature ◽  
Temperature Fields ◽  
High Curie Temperature ◽  
Sodium Niobate ◽  
Potassium Sodium Niobate ◽  
Practical Applications ◽  
Balanced Development ◽  
Potassium Sodium

Herein, we achieved a balanced development of piezoelectricity and Curie temperature, which would promote the practical applications of KNN-based ceramics in high temperature fields.

DIELECTRIC AND PIEZOELECTRIC PROPERTIES OF LEAD-FREE (Bi0.5Na0.5)0.94Ba0.06TiO3 + x%Ce2O3 + y%La2O3 + z%Y2O3 COMPOUNDS SYNTHESIZED BY SOL–GEL TECHNIQUE

2012 ◽  
Vol 02 (04) ◽  
pp. 1250022
Author(s):  
A. CHAOUCHI ◽  
M. SAIDI ◽  
S. D'ASTORG ◽  
M. RGUITI ◽  
C. COURTOIS
Keyword(s):  
Remanent Polarization ◽  
Piezoelectric Properties ◽  
Sol Gel ◽  
X Ray Diffraction ◽  
X Ray ◽  
Low Dielectric ◽  
Gel Technique ◽  
Tan Δ ◽  
High Dielectric ◽  
Dielectric And Piezoelectric Properties

( Bi 0.5 Na 0.5)0.94 Ba 0.06 TiO 3 + x% Ce 2 O 3 + y% La 2 O 3 + z% Y 2 O 3 compounds (named BNT–BT– x/y/z) were synthesized by a sol–gel technique, for (x,y,z) = (0,0,0), (0.25, 0.25, 0.25), (0.25, 0.5, 0.5), (0.5, 0.25, 0.25) and (0.5, 0.5, 0.25). The structural variation according to the different system compositions is investigated by X-ray diffraction analyses. The results shows that the addition of Ce2O3 , La2O3 or Y2O3 in BNT–BT system, do not modify the crystalline structure, and a rhombohedral–tetragonal morphotropic phase boundary is maintained for different dopant addition. The BNT–BT–x/y/z-based ceramics sintered at relatively low temperature (1100°C) exhibit a good densification ratio. The optimum dielectric and piezoelectric properties are obtained with the BNT–BT–0.5/0.25/0.25 composition. High dielectric properties at room temperature (εr > 1000) and low dielectric losses (tan δ < 4 × 10-2) are obtained for this composition. This compound exhibits a piezoelectric constant d33 of 95 pC/N, a good polarization behavior is observed with high remanent polarization Pr of 9.21 μC/cm2 and low value coercitive field Ec of 2.66 kV/mm.

Microstructure development and piezoelectric properties of highly textured CuO-doped KNN by templated grain growth

2010 ◽  
Vol 25 (4) ◽  
pp. 687-694 ◽  
Author(s):  
Yunfei Chang ◽  
Stephen F. Poterala ◽  
Zupei Yang ◽  
Susan Trolier-McKinstry ◽  
Gary L. Messing
Keyword(s):  
Grain Growth ◽  
Piezoelectric Properties ◽  
Microstructure Development ◽  
Electromechanical Properties ◽  
Templated Grain Growth ◽  
Polymorphic Phase Transition ◽  
Rocking Curve ◽  
Tan Δ ◽  
Reactive Matrix ◽  
Piezoelectric Performance

This paper demonstrates the production of 〈00l〉-oriented CuO-doped (K0.476Na0.524)NbO3 (KNN) piezoelectric ceramics with a polymorphic phase transition (PPT) temperature greater than 180 °C by templated grain growth (TGG) using high aspect ratio NaNbO3 template particles. A novel (to the KNN system) two-step sintering and annealing process combined with CuO doping is demonstrated to improve density and maximize texture quality (F00l = 99% and rocking curve FWHM = 6.9°) in textured KNN ceramics. The best electromechanical properties (kp ≈ 0.58, k31 ≈ 0.33, d33 ≈ 146 pC/N, To-t ≈ 183 °C, Tc ≈ 415 °C, εr = 202, and tan δ = 0.016) are achieved in 1 mol% CuO-doped KNN with F00l = 99% and a relative density of 96.3%. The values of d33, kp, and k31 are 70–90% higher than randomly oriented ceramics and are obtained without a significant reduction in the PPT temperature, resulting in stable piezoelectric performance over a wide temperature range (−50 to 180 °C). These results show that high-quality textured KNN can be obtained by TGG and that a reactive matrix is unnecessary.

Multiferroic Properties and Piezoelectric Characterizations of Bismuth Ferrite Based Compounds Produced by Spark Plasma Sintering

2014 ◽  
Vol 975 ◽  
pp. 257-262
Author(s):  
Ricardo A.M. Gotardo ◽  
Diogo Montanher ◽  
Otávio A. Protzek ◽  
Luiz F. Cótica ◽  
Ivair A. Santos ◽  
...  
Keyword(s):  
Spark Plasma Sintering ◽  
Single Phase ◽  
Piezoelectric Properties ◽  
Bismuth Ferrite ◽  
Ferroelectric Properties ◽  
Ac Losses ◽  
Low Dielectric ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Ferroelectric Transition Temperature

In this work, high dense, single phase ceramics of the 0.3BiFeO3 0.7BaTiO3 multiferroic solid solution were prepared by spark plasma sintering. The structural, microstructural, multiferroic and piezoelectric properties were investigated. The samples presented good magnetic and ferroelectric properties, Pr = 8.3 μC/cm2 and Mr = 0.03 emu/g, with low dielectric AC losses below the ferroelectric transition temperature. The obtained piezoelectric coefficients were determined as d31 = -8.1 pm/V and d33 = 13.5 pm/V.

scholarly journals Effects of alternating current poling on the dielectric and piezoelectric properties of Pb(In0.5Nb0.5)O3–PbTiO3 crystals with a high Curie temperature

RSC Advances ◽  
2021 ◽  
Vol 11 (21) ◽  
pp. 12826-12832
Author(s):  
Junjie Xiong ◽  
Zujian Wang ◽  
Xiaoming Yang ◽  
Rongbing Su ◽  
Xifa Long ◽  
...  
Keyword(s):  
Curie Temperature ◽  
Piezoelectric Properties ◽  
Alternating Current ◽  
High Curie Temperature ◽  
Dielectric And Piezoelectric Properties

The ε33T/ε0 and d33 values of ACP 0.66PIN–0.34PT crystals are shown to be 3070 and 1400 pC N−1, respectively, which are 14% and 18% larger than those of a DCP sample, owing to the enhancement of both intrinsic and extrinsic contributions.

Growth and Piezoelectric Properties of Large Size Ca3TaGa3Si2O14 Crystals

CrystEngComm ◽  
2021 ◽  
Author(s):  
Kainan Xiong ◽  
Sheng wang ◽  
Xiaoniu Tu ◽  
Zhen-Yong Man ◽  
Yanqing Zheng ◽  
...  
Keyword(s):  
High Temperature ◽  
Piezoelectric Material ◽  
Piezoelectric Properties ◽  
Czochralski Method ◽  
Large Size

Ca3TaGa3Si2O14 (CTGS) crystal is an excellent high temperature piezoelectric material. 4~6 inches CTGS crystals were successfully grown by Czochralski method. The (110), (100) and (001) faces were strongly exposed, respectively....

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