scholarly journals Influence of YTS addition on structural and electrical properties of PZT-based ceramics

2021 ◽  
Vol 15 (3) ◽  
pp. 279-287
Author(s):  
Yasmina Djoudi ◽  
Fares Kahoul ◽  
Louanes Hamzioui ◽  
Abderrezak Guemache
Keyword(s):  
Electrical Properties ◽  
Phase Structure ◽  
Electromechanical Coupling ◽  
Young Modulus ◽  
Electromechanical Coupling Factor ◽  
Dissipation Factor ◽  
Mechanical Quality Factor ◽  
Scanning Electron Micrographs ◽  
Solid State Method ◽  
Grain Distribution

Perovskite solid solution (1-x)Pb(Zr0.52Ti0.48)O3-xY(Ta1/2Sb1/2)O3 ceramics (abbreviated as PZT-YTS, where x = 0, 0.01, 0.02, 0.03, 0.04 and 0.05) were synthesized by conventional solid state method. The phase structure, microstructure and corresponding electrical properties were studied. X-ray diffraction and Raman analyses show that tetragonal phase structure was obtained in all ceramics at room temperature. Scanning electron micrographs of the samples show uniform grain distribution and grain growth inhibition with the increase of doping content. The dielectric permittivity, dissipation factor, electromechanical coupling factor, Young modulus, mechanical quality factor, piezoelectric charge constant, actual density and piezoelectric voltage constant, for the ceramics with x = 0.04 were: ?r = 714.9, tan ? = 0.03345, KP = 0.635, Y = 10.528 ? 1010 N/m2, Qm = 622.254, d31 = 74.738 ? 10?12 C/N, ?a = 7.67 g/cm3 and g31 = 10.477 ? 10?3 m?V/N, respectively, which are optimal in comparison to other studied samples.

(1-x)(K0.475Na0.475Li0.05)(Nb0.975Sb0.025)O3-xBiFeO3 Lead-Free Piezoelectric Ceramics with CuO Sintering Aid

2011 ◽  
Vol 687 ◽  
pp. 228-232
Author(s):  
Yong Jie Zhao ◽  
Yu Zhen Zhao ◽  
Rong Xia Huang ◽  
Rong Zheng Liu ◽  
He Ping Zhou
Keyword(s):  
Electrical Properties ◽  
Electromechanical Coupling ◽  
Piezoelectric Materials ◽  
Piezoelectric Ceramics ◽  
Electromechanical Coupling Factor ◽  
Coupling Factor ◽  
Mechanical Quality Factor ◽  
Lead Free ◽  
X Ray Diffraction ◽  
Diffraction Patterns

(1-x) (K0.475Na0.475Li0.05)(Nb0.975Sb0.025)O3-xmolBiFeO3 (x=0, 0.002, 0.004, 0.006, 0.008) doped with 0.8mol%CuO lead-free piezoelectric ceramics were prepared by the solid state reaction technique. X-ray diffraction patterns suggested that all the ceramics presented perovskite structure. The compositional dependence of the phase structure and the electrical properties of the ceramics were studied. The ceramic (x=0.002) near room temperature exhibited excellent electrical properties (piezoelectric constant d33=172pC/N, planar electromechanical coupling factor kp=0.43, and dielectric constant =418). A relatively high mechanical quality factor (Qm=200) was also obtained in this particular composition. All these results revealed that this system might become a promising candidate for lead-free piezoelectric materials.

Investigation on Electrical Properties of CaCu3Ti4O12-Modified (Na,Bi)TiO3-BaTiO3 Lead Free Piezoceramics

2014 ◽  
Vol 887-888 ◽  
pp. 289-293
Author(s):  
Jing Chang Zhao ◽  
Zhen Lai Zhou
Keyword(s):  
Electrical Properties ◽  
Electromechanical Coupling ◽  
Piezoelectric Properties ◽  
Piezoelectric Ceramics ◽  
Electromechanical Coupling Factor ◽  
Coupling Factor ◽  
Mechanical Quality Factor ◽  
Lead Free ◽  
Lead Free Ceramics ◽  
Structure Morphology

(Na,Bi)TiO3-BaTiO3lead free piezoelectric ceramics were fabricated with modification of CaCu3Ti4O12additives. The phase structure, morphology, dielectric and piezoelectric properties of prepared samples were investigated, respectively. It was found that CaCu3Ti4O12additives evidently improve the polarization properties of (Na,Bi)TiO3-BaTiO3lead free ceramics and the obtained samples exhibit an excellent piezoelectric properties (electromechanical coupling factorKp=31%, mechanical quality factorQm=151 and piezoelectric constantd33=160pC/N). According to results, the effect of CaCu3Ti4O12additives on electrical properties of (Na,Bi)TiO3-BaTiO3lead free piezoelectric ceramics is discussed.

Effects of Zn/Ni Ratio and Doping Material on Piezoelectric Characteristics of Pb((Zn, Ni)1/3Nb2/3)O3–Pb(Zr, Ti)O3 Ceramics

2020 ◽  
Vol 12 (2) ◽  
pp. 237-243
Author(s):  
So Won Kim ◽  
Yong Jeong Jeong ◽  
Hee Chul Lee
Keyword(s):  
Quality Factor ◽  
Electromechanical Coupling ◽  
Electromechanical Coupling Factor ◽  
Coupling Factor ◽  
Mechanical Quality Factor ◽  
Molar Ratio ◽  
Pzt Ceramics ◽  
Composition Ratio ◽  
Columbite Precursor ◽  
Piezoelectric Characteristics

This study investigates the effects of the Zn/Ni composition ratio and doping materials on the piezoelectric properties of PZNN-PZT ceramics for the fabrication of piezoelectric ceramics with excellent characteristics. A soft relaxor was used to improve the electrical characteristics and sinterability. The ceramics were fabricated with a base composition ratio of 0.13Pb((Zn1–xNix)1/3Nb2/3)O3–0.87Pb(Zr0.5Ti0.5)O3. The columbite phase was formed by reacting NiO and Nb2O5, which have low reactivity, as the first calcination, and the columbite precursor method was applied for the second calcination with PbO. Although the pellet was produced by sintering at a relatively low temperature of 950 °C, we obtained a dense ceramic with a high density of 7.9 g/cm3 . To improve the quality factor in the composition with a Ni/(Ni + Zn) molar ratio of 0.1, the doping materials MnO2, Fe2O3, CuO, and Bi2O3 were added and their properties were confirmed. Pure perovskite phases were formed in the ceramics of all compositions and doping materials. In particular, the PZNN-PZT ceramics doped with 0.3 wt% MnO2 showed a piezoelectric coefficient of 348 pC/N, electromechanical coupling factor of 0.59, mechanical quality factor of 345, and Curie temperature of 316 °C, which are excellent piezoelectric characteristics.

Processing and Electrical Properties of KNbO3 Ferroelectric Dense Ceramics Added with Small Amount of Bi2O3 and MnCO3

2006 ◽  
Vol 301 ◽  
pp. 19-22 ◽  
Author(s):  
Takeru Yoshida ◽  
Hajime Nagata ◽  
Tadashi Takenaka
Keyword(s):  
Electrical Properties ◽  
Grain Growth ◽  
Remanent Polarization ◽  
Electromechanical Coupling ◽  
Piezoelectric Properties ◽  
Hysteresis Loops ◽  
Electromechanical Coupling Factor ◽  
Coupling Factor ◽  
Milling Process ◽  
Firing Process

Doping a small quantity of additive Bi2O3 is effective in suppressing the deliquescence of KNbO3 ceramics. When an optimized ball-milling process was included, dense and nondeliquescent KNbO3 ceramics were obtained by a conventional firing process. However, the presence of Bi prevented grain growth (<0.2 μm) and it was one of the causes of low ferroelectricity. Moreover, the insufficient resistivity made the poling treatment difficult. In order to improve the electric properties, a small quantity of additive MnCO3 was also doped into KNbO3 with 0.5 mass% Bi2O3. Codoping of KNbO3 with MnCO3 and Bi2O3 (abbreviated to KNBixMny; x = 0~1.0, y = 0~1.0 in mass%) improved the ferroelectricity of samples, and it also had an effect on the resistivity and densification of sintered bodies. Well-saturated P-E hysteresis loops were observed with any amount of Mn and the largest remanent polarization Pr was about 16 μC/cm2. The piezoelectric properties of KNBi0.5Mn0.3, which had the highest piezoelectricity in this study, are an electromechanical coupling factor k33 and piezoelectric constant d33 of 0.30 and 101 pC/N, respectively.

Effects of YMnO3 Addition on Phase Structure, Microstructure and Electrical Properties of (Na0.515K0.485)0.94Li0.06(Nb0.8Ta0.2)O3 Lead-Free Ceramics

2014 ◽  
Vol 979 ◽  
pp. 167-170
Author(s):  
Pornsuda Bomlai
Keyword(s):  
Grain Size ◽  
Electrical Properties ◽  
Phase Structure ◽  
Dissipation Factor ◽  
Lead Free ◽  
Low Dielectric ◽  
Lead Free Ceramics ◽  
Dielectric Dissipation Factor ◽  
Sintering Method ◽  
Piezoelectric Devices

The (1-x)[(Na0.515K0.485)0.94Li0.06(Nb0.8Ta0.2)O3]-xYMnO3 (x = 0, 0.005, 0.01, 0.015 and 0.02) lead-free ceramics were synthesized by solid-state reaction sintering method. It was found that the addition of YMnO3 affected on the grain size, phase structure and electrical properties of (Na0.515K0.485)0.94Li0.06(Nb0.8Ta0.2)O3 ceramics. The grain size decreased with increasing YMnO3 content (x ≥ 0.01) and led to poor densification. The ceramic doped with 0.5 mol% YMnO3 showed good electrical properties such as d33 = 195 pC/N, kp = 43.9 %, Tc = 292 °C, TO−T = 35 °C, εr = 820 and rather low dielectric dissipation factor = 2.1%. This indicates that 0.5 mol% YMnO3 -doped (Na0.515K0.485)0.94Li0.06(Nb0.8Ta0.2)O3 piezoceramic is an alternative lead-free piezoelectric material for the development of piezoelectric devices working at high temperature.

Fabrication and Electrical Properties of (Bi1/2Na1/2)TiO3-BiAlO3 Ferroelectric Ceramics

2008 ◽  
Vol 388 ◽  
pp. 229-232 ◽  
Author(s):  
Yoshinori Watanabe ◽  
Yuji Hiruma ◽  
Hajime Nagata ◽  
Tadashi Takenaka
Keyword(s):  
Electrical Properties ◽  
Single Phase ◽  
Electromechanical Coupling ◽  
Electromechanical Coupling Factor ◽  
Coupling Factor ◽  
Fabrication Process ◽  
Piezoelectric Constant ◽  
Ferroelectric Ceramics ◽  
Depolarization Temperature ◽  
Maximum Field

(1-x)(Bi1/2Na1/2)TiO3-xBiAlO3 [BNTA100x (0 ≤ x ≤ 0.14)] ceramics were prepared by a conventional ceramic fabrication process. Single-phase perovskite structures were formed when x ≤ 0.08 for BNTA100x. The depolarization temperature, Td, at which piezoelectricity disappears, decreased with increasing x. The piezoelectric constant, d33, increased with increasing x because of the increase in free permittivity accompanied with decreasing Td. d33 and the electromechanical coupling factor, k33, of BNTA6 were 93 pC/N and 0.41, respectively. Normalized strain d33* (= Smax/Emax) at 60 kV/cm at the maximum field-induced strain was 122.2 pm/V for BNTA8. The value of d33* was higher than the calculated value of d33.

Effects of SiO2 Substitution on Piezoelectric and Mechanical Properties of PMS-PZT Ternary Piezoelectric Ceramics

2007 ◽  
Vol 280-283 ◽  
pp. 215-218 ◽  
Author(s):  
Zhi Gang Zhu ◽  
Bao Shan Li ◽  
Guo Rong Li ◽  
Qing Rui Yin
Keyword(s):  
Mechanical Properties ◽  
Grain Boundary ◽  
Fracture Strength ◽  
Electromechanical Coupling ◽  
Electromechanical Coupling Factor ◽  
Coupling Factor ◽  
Mechanical Quality Factor ◽  
Second Phase ◽  
Rapid Improvement ◽  
Power Application

The effects of SiO2 additives on microstructure, piezoelectric and mechanical properties were investigated for Pb0.98Sr0.02(Mn1/3Sb2/3)0.05Zro.48Ti0.47O3 (PMS-PZT) ternary system close to the morphotropic phase boundary. Piezoelectric coefficient (d33) and electromechanical coupling factor (Kp) considerably deteriorated with the substitution of SiO2 increased. On the other hand, the mechanical quality factor (Qm) increased, the maximum value was 1800. Fracture strength of 1.0 wt% SiO2 added the specimens reached to 106.54 MPa which was about 1.4 times higher than pure PMS-PZT ceramic. The rapid improvement of fracture strength probably due to the decrease of grain size, pore distribute and the second phase (redundant Si4+ ions) segregating on the grain boundary which enhanced the bond energy of grain boundary. The optimized concentration of SiO2 doped PMS-PZT ceramics was 0.4 wt% for high power application: d33 = 300 PC/N, Kp = 0.51, Qm = 1500, tand = 0.32% and the fracture strength was 88.5MPa.

Improvement of Electromechanical Coupling Factor and Mechanical Quality Factor in PZT-PMN Ceramics by MnO2 Addition

2009 ◽  
Vol 421-422 ◽  
pp. 381-384
Author(s):  
Rungnapa Tipakontitikul ◽  
Amporn Kamonlert ◽  
Sukum Eitssayeam ◽  
Anuson Niyompan
Keyword(s):  
Electromechanical Coupling ◽  
Electromechanical Coupling Factor ◽  
Coupling Factor ◽  
Mechanical Quality Factor ◽  
Tetragonal Symmetry ◽  
X Ray Diffraction ◽  
Ceramic Structure ◽  
Mechanical Quality ◽  
Conventional Sintering ◽  
Sintering Method

PZT-PMN ceramic system with presence of MnO2 contents were proposed and prepared using conventional sintering method as for piezoelectric transformer application. Phase formation and several dielectric and piezoelectric parameters were studied as a function of MnO2 concentration. The x-ray diffraction study revealed the tetragonal symmetry for all samples with MnO2 doping. To determine polarization, the P-E hysteresis loop were produced and the results indicated that entering of Mn4+ ions in the ceramic structure created large amount of oxygen vacancies and the consequent was observed as displacement of the loops to E axis. The obtained optimum parameter are d33 = 119 pC/N, kp = 0.207, Qm = 1669, tan = 0.0101, Pr = 20 μm/cm2 and Ec = 10 kV/cm.

scholarly journals Fabrication and Electrical Characterization of Lead-Free BiFe0.91(Mn0.47Ti0.53)0.09O3–BaTiO3 Ceramics

2020 ◽  
Vol 129 (1B) ◽  
Author(s):  
Nguyen TruongTho
Keyword(s):  
Electrical Properties ◽  
Electromechanical Coupling ◽  
Raw Materials ◽  
Perovskite Phase ◽  
Electrical Characterization ◽  
Electromechanical Coupling Factor ◽  
Solid State Reaction Method ◽  
Lead Free ◽  
Zero Field ◽  
Conventional Solid State Reaction

The <em>(1-x)</em>BiFe<sub>0</sub><sub>.91</sub>(Mn<sub>0</sub><sub>.47</sub>Ti<sub>0.53</sub>)<sub>0.09</sub>O<sub>3</sub>–<em>x</em>BaTiO<sub>3</sub> (BFMT–BT) lead-free ceramics have been fabricated by the conventional solid-state reaction method. The phase structure of BFMT-BT investigated by <em>X</em>–ray diffraction shows a single perovskite phase. Although 20% mol of Bi<sub>2</sub>O<sub>3</sub> was added to the raw materials, the evaporation of Bi<sup>3+</sup> ions during calcining and sintering processes is from 20 to 30% wt. relative to other elements. The effect of BaTiO<sub>3</sub>content on electrical properties of BFMT-BT ceramic has been investigated. At BaTiO<sub>3</sub>concentration of 0.3 mol and the sintering temperature of 950<sup>o</sup>C, electrical properties of ceramics are best with the density (<em>r</em>) of 7.6 g/cm<sup>3</sup>, the electromechanical coupling factor (<em>k<sub>p</sub></em>) of 0.28, the dielectric constant (<em>ε<sub>r</sub></em>) of 1028, and the difference in polarizations at zero field is about 10.5 mC/cm<sup>2</sup>.

Fabrication and Properties of 1-3-2 Piezoelectric Composites

2010 ◽  
Vol 123-125 ◽  
pp. 77-80
Author(s):  
Shi Feng Huang ◽  
Dong Yu Xu ◽  
Jun Chang ◽  
Ya Mei Liu ◽  
Xin Cheng
Keyword(s):  
Piezoelectric Ceramic ◽  
Electromechanical Coupling ◽  
Volume Fraction ◽  
Functional Materials ◽  
Electromechanical Coupling Factor ◽  
Coupling Factor ◽  
Mechanical Quality Factor ◽  
Piezoelectric Composites ◽  
Mechanical Quality ◽  
Planar Electromechanical Coupling Factor

In this paper, the 1-3-2 piezoelectric composites were fabricated by the cut-filling technique using P(MN)ZT piezoelectric ceramic as functional materials and polymer as matrix. The effects of ceramic volume fraction on the electrical properties of the composites were studied. The results indicate that as the ceramic volume fraction increases, the piezoelectric stain factor d33 increases evidently, while the piezoelectric voltage factor g33 decreases. Besides, the planar electromechanical coupling factor Kp and mechanical quality factor Qm of the composite are also less than those of the pure ceramic, while the thickness electromechanical coupling factor Kt is larger than that of the ceramic.

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