EFFECT OF SINTERING TEMPERATURE ON DENSIFICATION AND DIELECTRIC PROPERTIES OF Pb(Zr0.44Ti0.56)O3 CERAMICS

In this study, lead zirconate titanate ( Pb ( Zr 0.44 Ti 0.56) O 3) ceramics were fabricated with a mixed oxide synthetic route of lead oxide ( PbO ) and zirconium titanate ( ZrTiO 4) precursors. The effects of sintering temperature on phase formation, densification and dielectric responses of the ceramics have been investigated using XRD, SEM, EDX and dielectric measurement techniques. The densification of the PZT ceramics with density of 97% theoretical density can be achieved with appropriate sintering condition without any sintering additives. The optimized sintering condition has been identified as 1225°C for 4 h. More importantly, the dielectric properties are found to improve with increasing sintering temperature and grain size. However, when sintered over 1250°C, the dielectric properties of the ceramics are seen to deteriorate as a result of PbO vaporization, ZrO 2 segregations and porosity.

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Effect of TiO2 Nanopowders on the Sintering and Electric Properties of Lead Zirconate Titanate Ceramics

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.336-338.228 ◽

2007 ◽

Vol 336-338 ◽

pp. 228-230

Author(s):

Guang Hui Li ◽

Zhang Lian Hong ◽

Li Xia Peng ◽

Min Quan Wang

Keyword(s):

Dielectric Properties ◽

Bulk Density ◽

Lead Zirconate Titanate ◽

Sintering Temperature ◽

Lead Zirconate ◽

Electric Properties ◽

Pzt Ceramics ◽

Zirconate Titanate ◽

Titanate Ceramics ◽

Tio2 Nanopowder

XRD, SEM, bulk density and dielectric properties measurements were used to investigate the effect of TiO2 nanopowder substitution for conventional TiO2 micro-powder on the sintering and electric properties of PZT ceramics. Results revealed that the sintering temperature of dense Pb(Zr0.53Ti0.47)O3 ceramics was lowered about 50°C ~ 100°C when 20% and 40% of conventional TiO2 micro-powder was substituted by TiO2 nanopowder. The electric properties were kept or even enhanced in the PZT ceramics adopted the TiO2 nanopowder.

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Dielectric Properties of Modified Lead Zirconate Titanate

Journal of Mountain Research ◽

10.51220/jmr.v16i2.29 ◽

2021 ◽

Vol 16 (2) ◽

Author(s):

R.K. Sharma ◽

Gunjan Purohit ◽

D. K. Tyagi

Keyword(s):

Dielectric Constant ◽

Dielectric Properties ◽

Dielectric Loss ◽

Lead Zirconate Titanate ◽

Lead Zirconate ◽

Dielectric Measurement ◽

Low Frequencies ◽

Loss Measurement ◽

Zirconate Titanate ◽

Paraelectric State

In this paper, the dielectric properties of modified i. e. alkali doped lead zirconate titanate Pb(Zr1- xTix)O3 has been studied. The composition Pb1-x (La1-zDz)x (Zry Ti1-y)1-x/4 O3;where x = 0.10, y = 0.70, z = 0.0, 0.1, 0.2, and 0.3, D= Na, K and Li has been prepared by conventional mixed oxide method at a temperature of 11000C. Dielectric constant and dielectric loss measurement of the sintered pellets has been measured. Dielectric measurement shows that the dielectric constant decreases with an increase in temperature. The results show that the dielectric loss is very small and decreases with frequency above 300°C. The increase in the dielectric constant observed at high temperatures and low frequencies is explained in the paraelectric state.

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Dielectric properties of rare earth (Sm and La) substituted lead zirconate titanate (PZT) ceramics

10.1063/1.4810695 ◽

2013 ◽

Author(s):

Dipti ◽

Sangeeta Singh ◽

J. K. Juneja ◽

K. K. Raina ◽

Chandra Prakash

Keyword(s):

Rare Earth ◽

Dielectric Properties ◽

Lead Zirconate Titanate ◽

Lead Zirconate ◽

Pzt Ceramics ◽

Zirconate Titanate

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Relationships between Processing Parameters and Properties of PZT Ceramics

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.55-57.57 ◽

2008 ◽

Vol 55-57 ◽

pp. 57-60

Author(s):

C. Puchmark ◽

Gobwute Rujijanagul

Keyword(s):

Grain Size ◽

Grain Growth ◽

Lead Zirconate Titanate ◽

Sintering Temperature ◽

Processing Parameters ◽

Lead Zirconate ◽

Growth Equation ◽

Sintering Process ◽

Pzt Ceramics ◽

Linear Fit

In present work, lead zirconate titanate (PZT) ceramics, having the composition near morphotropic phase boundary were prepared by conventional mixed oxide method. The sintering process was performed at various sintering temperatures ranging from 1100 to 1300 oC. Relationships between phase and sintering temperature, and phase and structure were reported. An increase sintering temperature affected the increase in grain size. The grain growth rate was found to have a linear fit with the phenomenological kinetic grain growth equation. Tetragonal relative fraction increased with increasing sintering temperature. In addition, dielectric constant at dielectric peak increased with increasing grain size which consistent with the trend of tetragonality.

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Effect of Sintering Temperature on Phase Formation and Dielectric Properties of PLZT-BT Ceramics

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1120-1121.7 ◽

2015 ◽

Vol 1120-1121 ◽

pp. 7-10

Author(s):

Ladapak Chumprasert ◽

Narit Funsueb ◽

Apichart Limpichaipanit ◽

Athipong Ngamjarurojana

Keyword(s):

Dielectric Properties ◽

Lead Zirconate Titanate ◽

Sintering Temperature ◽

Lead Zirconate ◽

Rhombohedral Structure ◽

Relaxor Behavior ◽

Dielectric Measurements ◽

X Ray Diffraction ◽

X Ray ◽

Oxide Powders

In this research, Barium titanate (BT) additive in lanthanum modified lead zirconate titanate (PLZT) was used to stabilize the PLZT ceramics. Oxide powders were synthesized by mixed oxide synthetic route via a rapid vibro-milling technique. It was prepared with the chemical formula of 0.95 Pb0.91La0.09 (Zr0.65Ti0.35)0.9775O3 -0.05 BaTiO3 to investigate the dielectric properties of PLZT ceramics. The modified PLZT ceramics were fabricated at variation of sintering temperatures of 1200-1275°C for 4 hours. By employing X-ray diffraction (XRD), it was found a pure perovskite with rhombohedral structure. The relaxor behavior was observed from the dielectric measurements. The suitable sintering temperature of 0.95 PLZT - 0.05 BT was 1275°C (εr=10463, tanδ=0.0125 and Tm=70°C).

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Convergent-bceam diffraction studies on lead zirconate titanate Ceramics

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100143961 ◽

1986 ◽

Vol 44 ◽

pp. 482-483

Author(s):

M.L.A. Dass ◽

T.A. Bielicki ◽

G. Thomas ◽

T. Yamamoto ◽

K. Okazaki

Keyword(s):

Lead Zirconate Titanate ◽

Direct Proof ◽

Lead Zirconate ◽

Subsolidus Phase ◽

Pzt Ceramics ◽

Subsolidus Phase Diagram ◽

Zirconate Titanate ◽

Two Phases ◽

Cbd Method ◽

Titanate Ceramics

Lead zirconate titanate, Pb(Zr,Ti)O3 (PZT), ceramics are ferroelectrics formed as solid solutions between ferroelectric PbTiO3 and ant iferroelectric PbZrO3. The subsolidus phase diagram is shown in figure 1. PZT transforms between the Ti-rich tetragonal (T) and the Zr-rich rhombohedral (R) phases at a composition which is nearly independent of temperature. This phenomenon is called morphotropism, and the boundary between the two phases is known as the morphotropic phase boundary (MPB). The excellent piezoelectric and dielectric properties occurring at this composition are believed to.be due to the coexistence of T and R phases, which results in easy poling (i.e. orientation of individual grain polarizations in the direction of an applied electric field). However, there is little direct proof of the coexistence of the two phases at the MPB, possibly because of the difficulty of distinguishing between them. In this investigation a CBD method was found which would successfully differentiate between the phases, and this was applied to confirm the coexistence of the two phases.

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Preparation and Dielectric Properties of 1-3 La Modified PZT/IPN Piezoelectric Composites

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.105-106.355 ◽

2010 ◽

Vol 105-106 ◽

pp. 355-358 ◽

Cited By ~ 2

Author(s):

Z.L. Zhu ◽

Dong Yan Tang ◽

X.H. Zhang ◽

Y.J. Qiao

Keyword(s):

Heat Treatment ◽

Dielectric Constant ◽

Dielectric Properties ◽

Dielectric Loss ◽

Lead Zirconate Titanate ◽

Polymer Network ◽

Lead Zirconate ◽

Interpenetrating Polymer Network ◽

Ceramic Fibers ◽

Piezoelectric Composites

To prevent the potential cracking of gel fibers, La modified lead zirconate titanate (PLZT) ceramic fibers with diameter within 50µm were achieved by embedding into PLZT powders during the heat treatment. Then the 1-3 PLZT fiber/interpenetrating polymer network (IPN) piezoelectric composites were prepared by casting the IPN precursors onto the well aligned ceramic fibers. The influences of the heating temperatures and La amounts on the dielectric constant, dielectric loss with frequencies and piezoelectric constant of PLZT were investigated in detail. The morphologies of fibers and composites were observed by biological microscope. And also, the dielectric constant of PLZT fibers and PLZT fiber/IPN piezoelectric composites were detected.

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