Synthesis and characterization of BaTiO3 nanoparticles in oxygen atmosphere

Fuentes, S.; Zárate, R. A.; Chavez, E.; Muñoz, P.; Ayala, Mónica; Espinoza-González, Rodrigo; Leyton, Patricio

doi:10.1016/j.jallcom.2010.06.074

Cited by 55 publications

(38 citation statements)

References 29 publications

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“…3. The Raman spectra of the BTC samples are similar to those obtained for nanoparticles of pure BT in a previous study [30], and these spectra contain a characteristic Raman peak near 307 cm À1 (B1 mode) corresponding to the tetragonal BT phase, which contradicts the cubic symmetry observed by XRD analysis (BT) where no first-order Raman activity is expected. Busca et al [31] reported a distortion of the TiO 6 octahedron in the cubic BT phase inducing pseudotetragonality of the cubic phase, which could explain the significantly lower symmetry with respect to the cubic perovskite structure that is similar to that of the tetragonal BT.…”

Section: Raman Spectroscopysupporting

confidence: 70%

Synthesis and structural analysis of Co-doped BaTiO3

Padilla-Campos

Díaz-Droguett

Lavín

et al. 2015

Journal of Molecular Structure

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Section: Raman Spectroscopysupporting

confidence: 70%

Synthesis and structural analysis of Co-doped BaTiO3

Padilla-Campos

Díaz-Droguett

Lavín

et al. 2015

Journal of Molecular Structure

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“…A popular way to produce these oxide titanates is by reaction of titanium n -butoxide (Ti(OC 4 H 9 ) 4 ), tetrachloride (TiCl 4 ) or TiOSO 4 with metal-nitrate M(NO 3 ) 2 [ 42 ], -chloride MCl 2 [ 43 ] or -salts M(OH) 2 [ 44 ] solutions (with M = Mg, Ca, Sr, Ba, Mn, etc.) through a Sol-Gel synthesis.…”

Section: Synthesis Of Perovskitesmentioning

confidence: 99%

Review on Sol-Gel Synthesis of Perovskite and Oxide Nanomaterials

Navas

Fuentes

Castro‐Alvarez

et al. 2021

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145

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Sol-Gel is a low cost, well-established and flexible synthetic route to produce a wide range of micro- and nanostructures. Small variations in pH, temperature, precursors, time, pressure, atmosphere, among others, can lead to a wide family of compounds that share the same molecular structures. In this work, we present a general review of the synthesis of LaMnO3, SrTiO3, BaTiO3 perovskites and zinc vanadium oxides nanostructures based on Sol-Gel method. We discuss how small changes in the parameters of the synthesis can modify the morphology, shape, size, homogeneity, aggregation, among others, of the products. We also discuss the different precursors, solvents, working temperature, reaction times used throughout the synthesis. In the last section, we present novel uses of Sol-Gel with organic materials with emphasis on carbon-based compounds. All with a perspective to improve the method for future applications in different technological fields.

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“…BT nanoparticles were prepared by the hydrothermal procedure previously reported by Fuentes et al, 7 under a constant hydrothermal reaction temperature and time. Initially, a mixture of 1.1 ml of TiCl 4 in 2.3 ml of 2 M HCl and 2.4 g of BaCl 2 .2H 2 O was added to 13 ml of 6 M NaOH under N 2 bubbling to produce a barium titanium colloidal slurry.…”

Section: Experimental Workmentioning

confidence: 99%

“…In recent years, improving the dielectric, ferroelectric, and ferromagnetic properties of BT ceramics by doping with metals and oxide additives has attracted a great deal of research interests for their use in increasing the performance of several electronic devices 4,5 . Usually, the BT powders are synthesized by a number of leading routes, for instance, sol–gel, 7 coprecipitation, 8 hydrothermal, 9,10 Pechini, and electrochemical methods 11 . The metal doping in BT ceramics is achieved via the methods such as hydrothermal, 4 solid‐state reactions, 12 laser ablation, 13 implantation, 14 and wet‐chemical processes 15 .…”

Section: Introudctionmentioning

confidence: 99%

Hydrothermal synthesis, dielectric properties of barium titanate, cobalt doped barium titanate, and their graphene nanoplatelet composites

Baiju

Nagarajan

Sadasivam

et al. 2020

Asia-Pacific J Chem Eng

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In this work, pure barium titanate (BT) and cobalt doped barium titanate (CBT) were synthesized by using barium chloride, tetrabutyl titanate, cobalt chloride, and titanium chloride as precursors via a two-step hydrothermal process. These precursor mixtures were further blended with a dispersion of surfactant + graphene nanoplatelets (GNP) judiciously during the second step of hydrothermal process to obtain their respective BT-GNP and CBT-GNP nanocomposites. The morphological and crystal structures of BT, CBT, BT-GNP, and CBT-GNP samples were analyzed by the powder XRD, and FESEM revealed that the formations of 10-to 30-nm-sized cubic phase BT, CBT nanoparticles with least amount of agglomerations, and more spherically shaped particles in the CBT, whereas their nanocomposite morphologies and compositional elemental mapping showed random distributions of BT and CBT particles over the GNP. The FT-IR analysis indicated the presence of strong chemical interactions between the nanoparticles and GNP sheets in both the BT-GNP and CBT-GNP nanocomposites. Furthermore, the dielectric measurements carried out on the BT, CBT, BT-GNP, and CBT-GNP samples showed tremendous influences of metal doping and GNP on the BT which can support to tune its dielectric properties for several storage applications. K E Y W O R D S barium titanate, cobalt doping, nanocomposite, dielectric property, graphene nanoplatelets 1 | INTROUDCTION Barium titanate (BT) is a widely studied electroceramic material for various device applications such as capacitors, memory storage devices, thermistors, piezoelectric transducers, and sensors due to its excellent dielectric, piezoelectric, and ferroelectric properties. 1-6 In recent years, improving the dielectric, ferroelectric, and ferromagnetic properties of BT ceramics by doping with metals and oxide additives has attracted a great deal of research interests for their use in increasing the performance of several electronic devices. 4,5 Usually, the BT powders are synthesized by a number of leading routes, for instance, sol-gel, 7 coprecipitation, 8 hydrothermal, 9,10 Pechini, and electrochemical methods. 11 The metal doping in BT ceramics is achieved via the methods such

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Synthesis and characterization of BaTiO3 nanoparticles in oxygen atmosphere

Cited by 55 publications

References 29 publications

Synthesis and structural analysis of Co-doped BaTiO3

Synthesis and structural analysis of Co-doped BaTiO3

Review on Sol-Gel Synthesis of Perovskite and Oxide Nanomaterials

Hydrothermal synthesis, dielectric properties of barium titanate, cobalt doped barium titanate, and their graphene nanoplatelet composites

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