AC Conductivity and Dielectric Properties of BiScO3–PbTiO3 Piezoelectric Ceramics

2021 ◽  
Vol 13 (9) ◽  
pp. 1807-1811
Author(s):  
Jae-Hoon Ji ◽  
Yoo-Young Oh ◽  
Bo Su Kim ◽  
Wook-Hee Han ◽  
Jung-Hyuk Koh
Keyword(s):  
Dielectric Properties ◽  
Electrical Properties ◽  
Ac Conductivity ◽  
Piezoelectric Properties ◽  
Piezoelectric Materials ◽  
Ferroelectric Properties ◽  
Temperature Stability ◽  
Piezoelectric Ceramics ◽  
Dielectric Behavior ◽  
Wide Range

Bi-based BiMeO3 (where Me is a transition metal) has been extensively studied owing to its outstanding ferroelectric properties. The dielectric and electrical properties of piezoelectric ceramics can be enhanced by the addition of Bi-based materials such as BiAlO3, BiScO3 , and Bi(Mg, Ti)O3. Among them, BiScO3–PbTiO3 ceramics have shown excellent piezoelectric properties and temperature stability near the morphotropic phase boundary (MPB) region. Meanwhile, it is important to study the electrical properties of piezoelectric materials such as dielectric permittivity, conductivity of ferroelectric compounds, since dielectric and conductivities are related to pyroelectricity and piezoelectricity. In this study, the AC conductivity and dielectric properties of BiScO3–PbTiO3 ceramics were investigated with a wide range of frequencies and temperatures. Especially,the effect of PbTiO3 content on dielectric behavior of the BiScO3–PbTiO3 system was intensively studied by impedance spectroscopy.

Structure and electrical properties of (0.965 − x)(K0.48Na0.52)NbO3–xBiGaO3–0.035(Bi0.5Na0.5)ZrO3 piezoelectric ceramics

RSC Advances ◽  
2016 ◽  
Vol 6 (62) ◽  
pp. 57210-57216 ◽  
Author(s):  
Jie Xing ◽  
Zhi Tan ◽  
Jing Yuan ◽  
Laiming Jiang ◽  
Qiang Chen ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Piezoelectric Properties ◽  
Temperature Stability ◽  
Piezoelectric Ceramics ◽  
Lead Free

(0.965 − x)(K0.48Na0.52)NbO3–xBiGaO3–0.035(Bi0.5Na0.5)ZrO3 [(0.965 − x)KNN–xBG–BNZ] lead-free piezoelectric ceramics were prepared using normal sintering for improving the piezoelectric properties and temperature stability of KNN-based ceramics.

Electrical properties and temperature stability of a new kind of lead-free piezoelectric ceramics

2008 ◽  
Vol 41 (24) ◽  
pp. 245401 ◽  
Author(s):  
Yuanyu Wang ◽  
Jiagang Wu ◽  
Dingquan Xiao ◽  
Bin Zhang ◽  
Wenjuan Wu ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Temperature Stability ◽  
Piezoelectric Ceramics ◽  
Lead Free

Dielectric and Piezoelectric Properties of Lead Free (1-x-y)Na1/2Bi1/2TiO3-xBaTiO3-yBiFeO3 Piezoelectric Ceramics

2011 ◽  
Vol 492 ◽  
pp. 194-197 ◽  
Author(s):  
Yue Fang Wang ◽  
Xiu Jie Yi ◽  
Wei Pan ◽  
Guo Zhong Zang ◽  
Juan Du
Keyword(s):  
Electrical Properties ◽  
Dielectric Loss ◽  
Phase Structure ◽  
Perovskite Structure ◽  
Piezoelectric Properties ◽  
Piezoelectric Ceramics ◽  
Lead Free ◽  
Compositional Dependence ◽  
Pure Perovskite Structure ◽  
Dielectric And Piezoelectric Properties

Lead-free (1-x-y)Na1/2Bi1/2TiO3-xBaTiO3-yBiFeO3 ceramics were synthesized by ordinary sintering technique. The compositional dependence of phase structure and electrical properties of the ceramics was systematically investigated. All samples possessed pure perovskite structure. The dielectric and piezoelectric properties of ceramics were investigated with the amount of different BiFeO3 substitutions. The addition of BiFeO3 can not only decrease Ec and Pr but also lead to a significant degradation of the dielectric loss tanδ.

Structural and Electrical Properties of (1-x)Pb (Zry Ti1-y)O3-xSm(Fe3+0.5, Nb5+0.5)O3 Ceramics Prepared by Conventional Solid State Synthesis and Sintered at Low Temperature

2014 ◽  
Vol 87 ◽  
pp. 12-17
Author(s):  
Fares Kahoul ◽  
Louanes Hamzioui ◽  
Ahmed Boutarfaia
Keyword(s):  
Solid State ◽  
Electrical Properties ◽  
Piezoelectric Properties ◽  
Piezoelectric Materials ◽  
Promising Candidate ◽  
Solid State Method ◽  
Conventional Solid State Method ◽  
Structural And Electrical Properties ◽  
Conventional Solid State Synthesis ◽  
Stable Solid Solution

The phase structure, microstructure and electrical properties of (1-x)Pb (ZryTi1-y)O3-xSm(Fe3+0.5,Nb5+0.5)O3(PZT–SFN) (with x = 2 %, 41%≤ y ≤57 %) piezoelectric ceramics were prepared by the conventional solid state method, and effects of SFN and the Zr/Ti ratio content on the piezoelectric properties of PZT ceramics were mainly investigated. A stable solid solution has been formed between PZT and SFN, and a morphotropic phase boundary of PZT–SFN ceramics is identified in the range of 51% ≤ y ≤55 %. The Curie temperature of PZT–SFN ceramics decreases with increasing at Zr/Ti ratio content. A higher εrvalue and a lower tanδ value are demonstrated for the PZT–SFN ceramics with y = 53 %. The PZT–SFN ceramics with y = 53 % has an enhanced electrical behavior of kp~ 61.2 %, Qm~ 104, εr~ 566, tanδ ~ 2.02 % and TC~ 370OC. As a result, PZT–SFN ceramics are promising candidate materials for the field of lead piezoelectric materials and piezoelectric device.

(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.

Influence of Lanthanum Concentration on Properties of BLT Electroceramics

2012 ◽  
Vol 512-515 ◽  
pp. 1308-1312 ◽  
Author(s):  
Beata Wodecka-Duś ◽  
Agata Lisińska-Czekaj ◽  
Dionizy Czekaj
Keyword(s):  
Dielectric Properties ◽  
Electrical Properties ◽  
Impedance Spectroscopy ◽  
Frequency Domain ◽  
Room Temperature ◽  
Ferroelectric Properties ◽  
Lcr Meter ◽  
La Doped

Results of fabrication and study of Ba1-xLaxTi1-x/4O3(BLT) ceramics for x within the range 0.001≤x≤0.004 is reported in the present paper. BLT ceramics has a structure based on ABO3–type perovskite, and its properties strongly depend on the chemical comSubscript textposition. The interrelated semiconductor and ferroelectric properties of La-doped BaTiO3ceramics were considered for describing its electrical properties. Dielectric properties were studied in frequency domain by impedance spectroscopy with a Quadtech 1920-type precision LCR meter at room temperature T=RT.

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.

Study on Ferroelectric and Dielectric Properties of Zr-Doped Sr2Bi4Ti5O18 Ceramics

2010 ◽  
Vol 105-106 ◽  
pp. 248-251 ◽  
Author(s):  
Ji Gong Hao ◽  
Zhi Jun Xu ◽  
Rui Qing Chu ◽  
Yan Jie Zhang ◽  
Qian Chen ◽  
...  
Keyword(s):  
Dielectric Properties ◽  
Electrical Properties ◽  
Single Phase ◽  
Piezoelectric Properties ◽  
Ferroelectric Ceramics ◽  
Sem Images ◽  
Ceramic Samples ◽  
Xrd Patterns ◽  
Curie Temperature Tc ◽  
Ferroelectric And Piezoelectric Properties

Zr-doped Sr2Bi4Ti5O18 (SBTi) bismuth layer-structured ferroelectric ceramics were prepared and studied. XRD patterns revealed that all the ceramic samples were single phase compounds. SEM images showed that dense microstructures with uniform gain size were obtained in all samples. The effects of Zr4+ doping on the dielectric, ferroelectric and piezoelectric properties of SBTi ceramics were also investigated. It was found that Zr4+ dopant gradually decreased the Curie temperature (Tc), enhanced the remnant polarization (2Pr) and decreased the coercive field (Ec) of SBTi ceramics. Furthermore, the piezoelectric properties of the SBTi ceramics were improved by enlarging the content of Zr. The SBTi ceramics with 4 mol% of Zr4+ dopant exhibited good electrical properties: d33 = 21 pC/N, 2Pr = 14.3 μC/cm2, Tc = 251°C, εr = 376, tanδ = 1.8%.

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.

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