Electrical Characterization of Sol-Gel Derived PZT Films

1991 ◽  
Vol 243 ◽  
Author(s):  
G. Teowee ◽  
J.M. Boulton ◽  
S.C. Lee ◽  
D.R. Uhlmann
Keyword(s):  
Dielectric Constant ◽  
Low Temperatures ◽  
Lead Acetate ◽  
Single Phase ◽  
Sol Gel ◽  
Pyrochlore Phase ◽  
Electrical Characterization ◽  
Aging Rate ◽  
Pzt Films

AbstractSol-gel derived PZT films were successfully prepared from precursor solutions based on lead acetate and Zr/Ti alkoxides. A pyrochlore phase was observed in films fired at low temperatures, while single-phase perovskite films were obtained at temperatures above 725C. The dielectric constant increased to above 1000 when there was a higher proportion of perovskite than pyrochlore. The films were essentially fatigue-free up to 108 cycles and exhibited a low aging rate of 5.7% / decade-sec.

scholarly journals Synthesis and electrical characterization of Ca2Nd4Ti6O20 ceramics

2016 ◽  
Vol 34 (1) ◽  
pp. 164-168
Author(s):  
Raz Muhammad ◽  
Muhammad Uzair ◽  
M. Javid Iqbal ◽  
M. Jawad Khan ◽  
Yaseen Iqbal ◽  
...  
Keyword(s):  
Activation Energy ◽  
Dielectric Constant ◽  
Room Temperature ◽  
Sol Gel ◽  
Electrical Characterization ◽  
Sintered Sample ◽  
First Time ◽  
Alkoxide Precursors ◽  
Room Temperature Dielectric Constant

AbstractCa2Nd4Ti6O20, a layered perov skite structured material was synthesized via a chemical (citrate sol-gel) route for the first time using nitrates and alkoxide precursors. Phase analysis of a sample sintered at 1625 °C revealed the formation of an orthorhombic (Pbn21) symmetry. The microstructure of the sample after sintering comprised rod-shaped grains of a size of 1.5 to 6.5µm. The room temperature dielectric constant of the sintered sample was 38 at 100 kHz. The remnant polarization (Pr) and the coercive field (Ec) were about 400 μC/cm2 and 8.4 kV/cm, respectively. Impedance spectroscopy revealed that the capacitance (13.7 pF) and activation energy (1.39 eV) of the grain boundary was greater than the capacitance (5.7 pF) and activation energy (1.13 eV) of the grain.

Optimization of Sol-Gel Derived PZT thin Films by the Incorporation of Excess PBO

1992 ◽  
Vol 271 ◽  
Author(s):  
G. Teowee ◽  
J. M. Boulton ◽  
D. R. Uhlmann
Keyword(s):  
Single Phase ◽  
Elevated Temperatures ◽  
Sol Gel ◽  
Hysteresis Loops ◽  
Electrical Characterization ◽  
Dielectric Constants ◽  
Phase Assemblage ◽  
Pzt Thin Films ◽  
Pzt Films ◽  
Optimized Conditions

ABSTRACTA series of PZT precursor solutions was prepared which incorporated excess PbO to give the composition Pb1+xZr0.53Ti0.47O3+x, where 0 < × < 0.3. These solutions were spin coated on platinized Si wafers and fired at elevated temperatures up to 750C for 30 mins. After crystallization into single-phase perovskite, the films were studied using XRD, optical microscopy and electrical characterization techniques (hysteresis loops and dielectric properties). It was found that the presence of excess PbO significantly improved the PZT films in terms of phase assemblage, microstructure and electrical properties. Under optimized conditions, films with dielectric constants of around 3000 can be obtained.

Sol-Gel Derived Pb(Zn1/3Nb2/3)O3-PbTiO3 Thin Films

1997 ◽  
Vol 493 ◽  
Author(s):  
G. Teowee ◽  
K. C. McCarthy ◽  
F. S. McCarthy ◽  
D. G. Davis ◽  
J. T. Dawley ◽  
...  
Keyword(s):  
Thin Films ◽  
Dielectric Constant ◽  
Firing Temperature ◽  
Remanent Polarization ◽  
Single Phase ◽  
Perovskite Phase ◽  
Sol Gel ◽  
Pyrochlore Phase ◽  
Dissipation Factor ◽  
Pt Films

ABSTRACTA series of sol-gel derived PB(Zn1/3Nb2/3)O3-PbTiO3 (PZN-PT) films, with various PbTiO3 contents, have been prepared on platinized Si wafers. The (l-x)PZN - xPT films fired to 700C became single phase perovskite for x > 0.7. In the PZN-0.1PT films, the films still contain pyrochlore phase at a firing temperature of 850C; the perovskite phase appeared at a firing temperature of 800C. The dielectric constant increased with increasing PT content, with a peak in dielectric constant at x = 0.8. PZN-PT films with x = 0.8 exhibited dielectric constant, dissipation factor, remanent polarization and coercive field values of 600, 0.10, 6 and 45 kV/cm respectively.

Fabrication and electrical characterization of transparent NiO/ZnO p–n junction by the sol–gel spin coating method

2012 ◽  
Vol 64 (1) ◽  
pp. 219-223 ◽  
Author(s):  
M. Cavas ◽  
R. K. Gupta ◽  
A. A. Al-Ghamdi ◽  
Omar A. Al-Hartomy ◽  
Farid El-Tantawy ◽  
...  
Keyword(s):  
Spin Coating ◽  
Sol Gel ◽  
Electrical Characterization ◽  
Spin Coating Method ◽  
Coating Method

Low-temperature processing and characterization of single-phase PZT powders by sol-gel method

2007 ◽  
Vol 42 (23) ◽  
pp. 9801-9806 ◽  
Author(s):  
Radhouane Bel Hadj Tahar ◽  
Noureddine Bel Hadj Tahar ◽  
Abdelhamid Ben Salah
Keyword(s):  
Low Temperature ◽  
Single Phase ◽  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method ◽  
Low Temperature Processing

SYNTHESIS AND OPTICAL CHARACTERIZATION OF PYROELECTRIC NANOPOWDERS BASED ON PZT (95/5)

2010 ◽  
Vol 09 (03) ◽  
pp. 193-199 ◽  
Author(s):  
E. PAKIZEH ◽  
S. M. HOSSEINI ◽  
A. KOMPANY ◽  
M. GHASEMIFARD
Keyword(s):  
Low Temperatures ◽  
Optical Constants ◽  
Sol Gel ◽  
Normal Incidence ◽  
Optical Characterization ◽  
Analysis Program ◽  
Secondary Phases ◽  
Ir Reflectance ◽  
Gel Technique

Pb(Zr1-x, Tix)O3 (x = 0.05) with pyroelectric properties have been synthesized by sol–gel technique at low temperatures. XRD results indicate that the powder has perovskite structure without secondary phases and the average of particle size was estimated to be about 40 nm in diameters. The optical constants such as refractive index, n, extinction coefficient, k, and the dielectric function of PZT nanopowders have been investigated by Fourier transmittance infrared (FTIR) spectrum and Kramers–Kronig (KK) analysis program. The use of the KK method to analyze the normal incidence infrared (IR) reflectance spectra with a single resonance has also been described. The results indicated that the optical constant increases slowly as temperature of calcinations increases.

ChemInform Abstract: Synthesis and Electrical Characterization of Thin Films of PT and PZT Made from a Diol-Based Sol-Gel Route.

ChemInform ◽  
2010 ◽  
Vol 27 (25) ◽  
pp. no-no
Author(s):  
Y.-L. TU ◽  
M. L. CALZADA ◽  
N. J. PHILLIPS ◽  
S. J. MILNE
Keyword(s):  
Thin Films ◽  
Sol Gel ◽  
Electrical Characterization

scholarly journals Synthesis and characterization of some nanostructured composite oxides for low temperature catalytic combustion of dilute propane

RSC Advances ◽  
2017 ◽  
Vol 7 (45) ◽  
pp. 27863-27871 ◽  
Author(s):  
C. Doroftei ◽  
L. Leontie
Keyword(s):  
Low Temperatures ◽  
Catalytic Combustion ◽  
Sol Gel ◽  
Catalytic Performance ◽  
Synthesis And Characterization ◽  
Propane Combustion ◽  
Nanostructured Composite ◽  
Composite Oxides ◽  
Combustion Technique

Five nanosized perovskite and four ferrospinel powders were prepared by sol–gel self-combustion technique. The La0.6Pb0.2Mg0.2MnO3 perovskite was found to exhibit the best catalytic performance with respect to propane combustion at low temperatures.

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