Effect of Lead Content and B-Site Substitutions on Dielectric and Piezoelectric Properties of PZT Ceramics

2006 ◽  
Vol 514-516 ◽  
pp. 188-192
Author(s):  
Elena Dimitriu ◽  
Floriana Craciun ◽  
Marin Cernea ◽  
Rodica Ramer
Keyword(s):  
Room Temperature ◽  
Domain Walls ◽  
Piezoelectric Properties ◽  
Narrow Range ◽  
Sintering Temperature ◽  
Xrd Analysis ◽  
Lead Content ◽  
Lithium Ions ◽  
Pzt Ceramics ◽  
Dielectric And Piezoelectric Properties

The behaviour of the dielectric and piezoelectric properties of doped PZT ceramics, with variable lead content, has been investigated from –50oC to room temperature. The PZT materials were prepared by the oxide technique and samples were sintered as pellets, at various temperatures. Niobium and lithium ions have been substituted for Ti4+, Zr4+ in the PZT matrix, and a small amount of Bi2O3 was added to cause A-position vacancies. The lead content in the four materials prepared varies in a narrow range, from 0.97 to 1.029 lead atoms, while the concentration of all other components are maintained constant. The microstructure of samples, evaluated by SEM technique and XRD analysis evidenced the presence of the tetragonal phase characteristic for the PZT 52/48. The dielectric and piezoelectric c onstants measured on poled samples depends on the sintering temperature, defects and domain walls, lead content.

scholarly journals Effects of CuO Sintering Aids on Microstructure and Electric Properties for (Na0.48K0.473Li0.04Sr0.007) (Nb0.883Ta0.05Sb0.06Ti0.007)O3 Ceramics

Crystals ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 935
Author(s):  
Cheng-Shong Hong ◽  
Yuan-Xin Zhang ◽  
Yi-Tian Hong
Keyword(s):  
Oxygen Vacancies ◽  
Energy Harvester ◽  
Domain Walls ◽  
Piezoelectric Properties ◽  
Sintering Temperature ◽  
Electric Properties ◽  
Sintering Aids ◽  
Lead Free Ceramics ◽  
Physical Response ◽  
Hard Type

In this paper, the effects of CuO sintering aids on microstructure and electric properties are investigated for the non-stoichiometric (Na0.48K0.473Li0.04Sr0.007)(Nb0.883Ta0.05Sb0.06Ti0.007)O3+x mol% CuO lead free ceramics. As the amounts of CuO equal 1 mol%, the sintering temperature is 975 °C and the piezoelectric parameters are d33 = 200 pC/N, g33 = 38 (10−3 Vm/N), d33 × g33 = 7600 (10−15 m2/N), kp = 0.38, Qm = 240, Pr = 18.93 μC/cm2 and EC = 8.75 kV/cm. The piezoelectric properties are changed to hard type and suitable for energy harvester with multilayer technology. The physical response mechanisms are suggested that the diffused phase transitions are enhanced, the Cu2+ ions substitute for the B-site ions with forming the Oxygen vacancies and the domain walls are pinning.

Effect of Sintering Temperatures and Nd2O3 Dopant on the Microstructure, Physical and Electrical Properties of KNNT Ceramics

2020 ◽  
Vol 398 ◽  
pp. 67-75
Author(s):  
Hamza M. Kamal ◽  
Mohammed J. Kadhim
Keyword(s):  
Electrical Properties ◽  
Piezoelectric Properties ◽  
Sintering Temperature ◽  
Neodymium Oxide ◽  
Remarkable Improvement ◽  
Microstructure Density ◽  
Dielectric And Piezoelectric Properties ◽  
Piezoelectric Characteristics

The microstructure, physical, dielectric and the piezoelectric characteristics of the (K0.5Na0.5) (Nb0.9Ta0.1) O3 (KNNT) ceramics as a function of the sintering temperature and Nd2O3 dopant were inspected in this work. It was found that the sintering temperature has a significant impact on the above-mentioned properties. In the same context, the addition of HYPERLINK "https://pubchem.ncbi.nlm.nih.gov/compound/Neodymium_oxide" neodymium oxide led to remarkable improvement in the microstructure, density, dielectric and piezoelectric properties of KNNT ceramics when compared to undoped ceramics.

Study on the Piezoelectric Behavior and Structural Changes of Strontium Doped PZT Ceramics

2016 ◽  
Vol 869 ◽  
pp. 13-18
Author(s):  
Margarete Soares da Silva ◽  
Lucas L. Silva ◽  
Eliane F. Souza ◽  
Elson Longo ◽  
Maria A. Zaghete ◽  
...  
Keyword(s):  
Lead Zirconate Titanate ◽  
Room Temperature ◽  
Structural Changes ◽  
Piezoelectric Properties ◽  
Lead Zirconate ◽  
Strontium Content ◽  
Pzt Ceramics ◽  
Ceramic Samples ◽  
Piezoelectric Behavior ◽  
Piezoelectric Devices

Some piezoelectric properties of lead zirconate titanate PbZr0.53Ti0.47O3 ceramic samples sintered at 1100oC for 3 hours has been investigated in this work and compared to the strontium modification at 0.2, 0.4, and 0.6 mol%. Polarization versus Electric Field curve and d33 and Kp piezoelectric parameters was taken at room temperature in order to investigate the correlation with phase amount and lattice parameters of crystalline phases calculated through Rietveld refinement. The results indicated the lead substitution with 0.4 mol% of strontium enhances the d33 and Kp piezoelectric parameters, but there is no systematic variation of the piezoelectric properties with strontium content. By the other hand, tetragonal phase seems plays an important rule on piezoelectric devices operating near the room temperature and some correlations could be found.

Elastic, Dielectric and Piezoelectric Properties of Fe2O3Doped PMnS-PZN-PZT Ceramics

2016 ◽  
Vol 491 (1) ◽  
pp. 15-26 ◽  
Author(s):  
H. Zhang ◽  
J. Shen ◽  
J. Tian ◽  
J. Zhou ◽  
W. Chen
Keyword(s):  
Piezoelectric Properties ◽  
Pzt Ceramics ◽  
Dielectric And Piezoelectric Properties ◽  
Elastic Dielectric

Effects of Lanthanum Modification on the Structure and Electrical Properties of PZN-PZT Ceramics

2007 ◽  
Vol 280-283 ◽  
pp. 227-230 ◽  
Author(s):  
X. Zeng ◽  
Ai Li Ding ◽  
X.S. Zheng ◽  
Yong Zhang ◽  
Ping Sun Qiu
Keyword(s):  
Piezoelectric Properties ◽  
Pyrochlore Phase ◽  
Present System ◽  
Precursor Method ◽  
Pzt Ceramics ◽  
La Doping ◽  
Maximum Decrease ◽  
Columbite Precursor ◽  
Dielectric And Piezoelectric Properties ◽  
Diffuse Phase

La-modified PZN-PZT compositions with representative formula Pb1-0.7xLa0.7x(Zn1/3Nb2/3)0.3- (Zr0.55Ti0.45)0.7(1-x/4)O3 were prepared by the columbite precursor method. La content, x, was varied from 0 to 8mol%. Effects of La doping on microstructure, dielectric and piezoelectric properties were investigated. The results showed that in present system La doping promotes the formation of pyrochlore phase and the phase shifted from rhombohedral to tetragonal structure with increasing La content. It was also found that La doping makes dielectric permittivity maximum decrease and the degree of diffuse phase transition enhance. Appropriate amount of La doping could improve the piezoelectric properties.

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