Characterization and preparation of thin films and homogeneously precipitated Pb(Zr,Ti)O3 powders Homojen olarak çökelti̇lmi̇ş Pb(Zr,Ti)O3 tozlarin ve i̇nce fi̇lmleri̇n hazirlanmasi ve karakteri̇zasyonu

Date

1999-12-01

Author

Özenbaş, Ahmet Macit

Metadata

Show full item record

Item Usage Stats

151
views

0
downloads

In this study, ferroelectric Pb(Zr,Ti)O3 powders and thin films were prepared from metal chlorides using sol-gel processing method. For powders; homogeneous precipitation from aqueous solution and for films; dip coating just before precipitation was applied in the presence of urea, [(NH2)2CO]. Characterization of the films and powders were carried out primarily by XRD and SEM/EDX. Both the films and powders were stoichiometric and completely crystallized into perovskite phase after annealing for 5 hours at 850°C. For annealing temperatures between 350 and 650°C, perovskite, pyrochlore, lead titanate, and for those between 650 and 850°C, pyrochlore and perovskite phases were observed. The PZT powders obtained by using urea had homogeneously distributed, fine particle sizes and morphology. PZT films on platinized silicon substrates obtained by using urea showed remanent polarization and coercive field values as ∼22 μC/cm2 and ∼20 kV/cm from the polarization hysteresis diagram. Dielectric constant of the same films was calculated as 562.

Subject Keywords

Characterization, Coercive force, Crystallization, Morphology, Thin films, Sol-gels

URI

https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=2142646548&origin=inward
https://hdl.handle.net/11511/74238

Conference Name

Ulusal Toz Metalurjisi Konferansi: National Powder Metallurgy Conference, (15 - 17 Eylül 1999)

Collections

Graduate School of Natural and Applied Sciences, Conference / Seminar

Suggestions

OpenMETU
Core

Characterization of TiO2 thin films prepared by sol-gel processing Özenbaş, Ahmet Macit (2004-01-01) In this work, TiO2 thin films were prepared by using sol-gel processing on soda-lime glass and silicon substrates. Precursor solutions for TiO2 films were prepared by using the proper amounts of titaniumtetraisopropoxide, diethanolamine and ethanol. The thickness of the TiO2 films was adjusted by repeating the spin coating cycle before the final heat treatment. Finally, various amounts of polyethylene glycol (PEG) were added to the above solution to observe its effect on the film morphology. The electrical ...
Preparation of lead free BZT-BCT thin films by chemical solution deposition and their characterization Çeltikçi, Barış; Özenbaş, Ahmet Macit; Department of Metallurgical and Materials Engineering (2012) In the presented thesis, lead-free Ba(Ti0.8Zr0.2)O3-(Ba0.7Ca0.3)TiO3 (BZT-BCT) thin films were deposited on Pt/TiO2/SiO2/Si substrates using chemical solution deposition method and then the effect of process parameters were investigated to obtain optimum parameters of these lead-free thin films. The phase was selected near to the morphotropic phase boundary (MPH) to increase the number of polarization directions where rhombohedral and tetragonal phases exist together. In this study, the effect of sintering ...
Characterization of maghemite thin films prepared by sol-gel processing Karakuşçu, Aylin; Özenbaş, Ahmet Macit; Department of Metallurgical and Materials Engineering (2006) In this study, maghemite (γ-Fe2O3) thin films were prepared by chemical solution deposition on glass and quartz substrates. The solution was prepared by using 0.3 M iron (III) nitrate [Fe(NO3)3 - 9H2O] as precursor and dissolved in a mixture of 2-methoxyethanol and acetylacetone in a molar ratio of 20:2, by stirring the solution at RT for 2 hours. Substrates were prepared by either piranha etching method or ultrasonic cleaning method. The solution was spin coated on glass and quartz substrates at 1400 and 4...
Synthesis of CNT-titania-silica nanocomposite thin films: the effect of heat treatment on photocatalytic activity Kırbaş, Tuğçe; Doğu, Timur; Department of Chemical Engineering (2014) In this study, CNT-TiO2-SiO2 nanocomposites were synthesized by sol-gel process and the thin films over glass substrates were fabricated by dip coating method. The effects of CNT addition, heat treatment temperature and atmospheres on the structure and photocatalytic properties were examined. The thin films were prepared with and without carbon nanotubes and the heat treatment was carried out at different temperatures in the range of 300-600oC under air and nitrogen atmosphere. Characterization of the sampl...
Preparation of BTS-BCT thin films by chemical solution deposition and their characterization / Akbay, Berk; Özenbaş, Ahmet Macit; Department of Metallurgical and Materials Engineering (2015) In the presented thesis, lead-free Ba(Ti0.88Sn0.12)O3-0.3(Ba0.7Ca0.3)TiO3 (BTS-BCT) thin films were deposited on (111)-Pt/TiO2/SiO2/(100)-Si substrates using chemical solution deposition method and then the effect of process parameters were investigated to obtain optimum parameters of these lead-free thin films. The phase was selected near to the morphotropic phase boundary (MPB) to increase the number of polarization directions where rhombohedral and tetragonal phases exist together. In this study, the eff...

Citation Formats

A. M. Özenbaş, “Characterization and preparation of thin films and homogeneously precipitated Pb(Zr,Ti)O3 powders Homojen olarak çökelti̇lmi̇ş Pb(Zr,Ti)O3 tozlarin ve i̇nce fi̇lmleri̇n hazirlanmasi ve karakteri̇zasyonu,” Ankara, Türkiye, 1999, p. 375, Accessed: 00, 2021. [Online]. Available: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=2142646548&origin=inward.