Preparation of PbTiO3 thin films using an alkoxide-alkanolamine sol-gel system

Ferroelectric SrBi 2 Ta 2 O 9 (SBT) thin films on Pt/ZrO 2 /SiO 2 /Si were successfully prepared by using an alkanolamine-modified chemical solution deposition method. It was observed that alkanolamine provided stability to the SBT solution by retarding the hydrolysis and condensation rates. The crystallinity and the microstructure of the SBT thin films improved with increasing annealing temperature and were strongly correlated with the ferroelectric properties of the SBT thin films. The films annealed at 800°C exhibited low leakage current density, low voltage saturation, high remanent polarization, and good fatigue characteristics at least up to 10 10 switching cycles, indicating favorable behavior for memory applications.

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“…2,14 As shown in Figs. The shoulder at ∼1250 cm −1 and the peak at 1740 cm −1 are consistent with the formation of an ester compound.…”

Section: Resultsmentioning

confidence: 84%

“…14,15 To maximize solution stability, hydrolysis and condensation rates must be controlled. 14,15 To maximize solution stability, hydrolysis and condensation rates must be controlled.…”

Section: Resultsmentioning

confidence: 99%

An optimized process for fabrication of SrBi₂Ta₂O₉ thin films using a novel chemical solution deposition technique

Kim

Lee

et al. 1999

J. Mater. Res.

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“…Also, the thermal processing affects the film microstructure. Therefore, selection of appropriate treatments of crystallization results in films with better ferroelectric responses. , …”

Section: Discussionmentioning

confidence: 99%

Crystallization, Heterostructure, Microstructure, and Properties of Ferroelectric Strontium Bismuth Tantalate Films Derived from Tantalum Glycolate Solutions

et al. 2003

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Strontium bismuth tantalate (SBT) films were prepared by chemical solution deposition (CSD) onto Pt/TiO 2 /SiO 2 /(100)Si substrates. Nominal chemical compositions of the precursor solutions of SrBi 2 Ta 2 O 9 , SrBi 2.2 Ta 2 O 9 , Sr 0.8 Bi 2 Ta 2 O 9 , and Sr 0.8 Bi 2.2 Ta 2 O 9 were tested for the deposition of the films. Crystallization of the films was carried out by a two-step process (TS) or a single-step process (SS). The TS treatment consisted of thermal treatment of the films in oxygen atmosphere at 550°C for 7200 s, with a heating rate of 8°C/s, followed by a rapid thermal processing (RTP) in oxygen at a temperature of 650°C for 3600 s, using a heating rate of 200°C/s. The SS process was just the RTP treatment of the films. The X-ray diffraction (XRD) patterns of the crystalline films showed the formation of the layered perovskite together with a second phase. Analysis of the films by means of Rutherford backscattering spectroscopy (RBS) showed that this second phase was placed at the interface and it was formed by the reaction of the film and the substrate. Composition and thickness of this interface as well as profile composition of the SBT layer were also analyzed by RBS. These studies indicated that the heterostructure of the films was related with their nominal composition and with the type of thermal treatment used for their crystallization. Both parameters, composition and treatment, also determined the surface microstructures of the films. Dielectric and ferroelectric properties of the films were measured and related with their composition, heterostructure, and microstructure. The best hysteresis loops with the maximum values of remanent polarization, P r , were obtained for the films with nominal composition of Sr 0.8 Bi 2.2 Ta 2 O 9 and crystallized with the SS treatment. These films have a low fatigue up to ∼10 11 cycles, a retention of the polarization over 10 5 seconds, and leakages of <10 -7 µA/cm 2 at 300 kV/cm.

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“…Titanium complexes based on tridentate alkoxide O,N,O‐type ligands have a range of applications as catalysts in organic synthesis,1 initiators for alkene2,3 or lactone4,5 polymerization, and precursors for nanomaterials 6. The most characteristic ligand structures, including aminodialcohols,1a,3b,3c,7 aminophenols,8 2,6‐bis(alkylhydroxy)pyridines,9 aminodiphenols,10 and pyridinediphenols,3d,11 are presented in Scheme .…”

Section: Introductionmentioning

confidence: 99%

Titanium(IV) Complexes Based on Tridentate N,N,O Ligands – Synthesis, Structure, and Thermal Decomposition

et al. 2015

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Wet‐spun stimuli‐responsive composite fibers made of covalently crosslinked alginate with a high concentration of single‐walled carbon nanotubes (SWCNTs) are electroconductive and sensitive to humidity, pH, and ionic strength, due to pH‐tunable water absorbing properties of the covalently crosslinked alginate. The conductivity depends on the material swelling in humid atmosphere and aqueous solutions: the greater the swelling, the smaller is the electrical conductivity. The covalently crosslinked fibers reversibly deform during the swelling/shrinking. In the swollen state, the fibers are less conductive, while they return to the same level of conductivity after shrinking. This unique reversible change of electroconductivity of the SWCNT‐alginate fibers is due to the elastic deformation of the alginate network in the area of electrical contacts between SWCNT bundles arrested in the alginate matrix. Fibers of this kind can be used as a simple, robust, disposable, and biocompatible platform for electrotextiles, biosensors, and flexible electronics in biomedical and biotechnological applications.

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Preparation of PbTiO3 thin films using an alkoxide-alkanolamine sol-gel system

Cited by 16 publications

References 11 publications

An optimized process for fabrication of SrBi₂Ta₂O₉ thin films using a novel chemical solution deposition technique

An optimized process for fabrication of SrBi₂Ta₂O₉ thin films using a novel chemical solution deposition technique

Crystallization, Heterostructure, Microstructure, and Properties of Ferroelectric Strontium Bismuth Tantalate Films Derived from Tantalum Glycolate Solutions

Titanium(IV) Complexes Based on Tridentate N,N,O Ligands – Synthesis, Structure, and Thermal Decomposition

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Preparation of PbTiO3 thin films using an alkoxide-alkanolamine sol-gel system

Cited by 16 publications

References 11 publications

An optimized process for fabrication of SrBi2Ta2O9 thin films using a novel chemical solution deposition technique

An optimized process for fabrication of SrBi2Ta2O9 thin films using a novel chemical solution deposition technique

Crystallization, Heterostructure, Microstructure, and Properties of Ferroelectric Strontium Bismuth Tantalate Films Derived from Tantalum Glycolate Solutions

Titanium(IV) Complexes Based on Tri­dentate N,N,O Ligands – Synthesis, Structure, and Thermal Decomposition

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An optimized process for fabrication of SrBi₂Ta₂O₉ thin films using a novel chemical solution deposition technique

An optimized process for fabrication of SrBi₂Ta₂O₉ thin films using a novel chemical solution deposition technique

Titanium(IV) Complexes Based on Tridentate N,N,O Ligands – Synthesis, Structure, and Thermal Decomposition