Sol–gel synthesis and characterization of Ce doped-BaTiO3

Cernea, Marin; Monnereau, O.; Llewellyn, Philip L.; Tortet, L.; Galassi, Carmen

doi:10.1016/j.jeurceramsoc.2005.09.039

Cited by 73 publications

(41 citation statements)

References 20 publications

(21 reference statements)

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“…This process is chosen because it gives enhanced homogeneity, better control for size, shape, and degree of agglomeration of the resulting nanocrystals, simple compositional control, and low processing temperature [2,5,8,[10][11][12]. In order to obtain sols and gels with desirable properties, the control of precursor reactivity may be achieved through the addition of chelating agents such as -diketones, carboxylic acids, or other complex ligands [11,13]. These characteristics, along with the chemical composition, are found to influence significantly the magnetic properties of nanoferrites [13].…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Nano-Cadmium Ferrite

Ismail

Labib

Attallah

2013

Journal of Ceramics

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Nano-hematite ( -Fe 2 O 3 ) and nano-cadmium ferrite (CdFe 2 O 4 ) are prepared using template-assisted sol-gel method. The prepared samples are analyzed using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and Mössbauer spectroscopy techniques for structural and microstructural studies. Nano--Fe 2 O 3 with particle size ∼60 nm is formed at 500 ∘ C, while nano-CdFe 2 O 4 with smaller particle size (∼40 nm) is formed at 600 ∘ C. It is found that with a simple solgel process we can prepare nano-CdFe 2 O 4 with better conditions than other methods: pure phase at lower sintering temperature and time (economic point) and of course with a smaller particle size. So, based on the obtained experimental results, a proposed theoretical model is made to explain the link between the use of the sol-gel process and the formation of nano-CdFe 2 O 4 as a pure phase at low temperature. This model is based on a simple magnetostatic interaction between the formed nuclei within the solution leading to the formation of the stable phase at low temperature.

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Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Nano-Cadmium Ferrite

Ismail

Labib

Attallah

2013

Journal of Ceramics

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“…As known, such permittivity anomaly is usually attributed to space charges. This kind of space charges existed in many BNT-based ceramics (Zuo et al 2008;Cernea et al 2010;Lin and Kwok 2010), which is also severed as charged vacancies. It has been proved that the space charges are produced by A-site deficiency (Zuo et al 2008).…”

Section: Crystal Structuresmentioning

confidence: 99%

Properties of 0.96(Bi_0.5Na_0.5)TiO₃-(0.04-x)BaTiO₃-xLiNbO₃ Lead-Free Piezoceramics Near Morphotropic Phase Boundary

Zhang¹,

Yang

Wang

et al. 2015

Energy Harvesting and Systems

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The structure, dielectric and piezoelectric properties of 0.96(Bi 0.5 Na 0.5 )TiO 3 -(0.04-x)BaTiO 3 -xLiNbO 3 (x ¼ 0, 0.01, 0.02, 0.03, 0.04) ceramics were investigated by a conventional solid-state reaction method. All compositions show a single perovskite structure without any second phases. It was ascertained that the morphotropic phase boundary (MPB) of ferroelectric rhombohedral and relaxor tetragonal lies in the range of 0.02 x 0.04 at room temperature. As a result, the MPB compositions show improved properties; the saturated polarization, remnant polarization and coercive field are 43.7 μC/cm 2 , 38.7 μC/cm 2 and 48.7 kV/cm for x ¼ 0.02 and 43 μC/cm 2 , 37.9 μC/cm 2 and 47 kV/cm for x ¼ 0.03, respectively. The maximum of piezoelectric constant d 33 (124pC/N) was obtained for the ceramic with x ¼ 0.03, which was located at the MPB region. Our results do not only supplement for BNT-based lead-free piezoelectric ceramics but also provide a way to develop new high-performance Pb-free piezoceramics.

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“…Metal complexes are widely used as catalysts of chemical reactions, e.g. Oxidative dehydrogenation (ODH) of ethane and epoxidation of geraniol [4][5][6] and as stabilizers or precursors in sol-gel processes [7][8][9]. Very few works have been performed to study anticorrosive behavior of metal complexes.…”

Section: Introductionmentioning

confidence: 99%

Inhibition Effect of Copper Complex of 1-(8-Hydroxy Quinolin-2-yl- Methyl) Thiourea on the Corrosion of Mild Steel in Sodium Chloride Solution

Syed¹,

Abdul²,

Rajendran³

2014

TOMSJ

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Abstract:The Corrosion inhibition of an inhibitor namely Copper complex of 1-(8-hydroxy quinolin-2-yl-methyl) thiourea (Cu-HTF) which controls the corrosion of mild steel immersed in an aqueous solution containing 60 ppm Cl -has been investigated through electrochemical and mass loss method. The formulation consisting of 60 ppm of Cl -and 50 ppm of Cu-HTF offers good inhibition efficiency of 78 %. Polarization study shows that this formulation acts as a cathodic inhibitor.AC impedance spectra indicate that a protective film is formed on the mild steel surface. Fluorescence spectral analysis was used to detect the presence of iron-inhibitor complex. The surface morphology has been analyzed by FTIR, UV-Visible spectroscopy, Scanning Electron Microscope (SEM) and EDAX. Cu-HTF has the ability to prevent the growth of certain microorganisms such as E. coli, Streptococcus, Pseudomonas and Enterobacter.

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Sol–gel synthesis and characterization of Ce doped-BaTiO3

Cited by 73 publications

References 20 publications

Preparation and Characterization of Nano-Cadmium Ferrite

Preparation and Characterization of Nano-Cadmium Ferrite

Properties of 0.96(Bi_0.5Na_0.5)TiO₃-(0.04-x)BaTiO₃-xLiNbO₃ Lead-Free Piezoceramics Near Morphotropic Phase Boundary

Inhibition Effect of Copper Complex of 1-(8-Hydroxy Quinolin-2-yl- Methyl) Thiourea on the Corrosion of Mild Steel in Sodium Chloride Solution

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Sol–gel synthesis and characterization of Ce doped-BaTiO3

Cited by 73 publications

References 20 publications

Preparation and Characterization of Nano-Cadmium Ferrite

Preparation and Characterization of Nano-Cadmium Ferrite

Properties of 0.96(Bi0.5Na0.5)TiO3-(0.04-x)BaTiO3-xLiNbO3 Lead-Free Piezoceramics Near Morphotropic Phase Boundary

Inhibition Effect of Copper Complex of 1-(8-Hydroxy Quinolin-2-yl- Methyl) Thiourea on the Corrosion of Mild Steel in Sodium Chloride Solution

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Properties of 0.96(Bi_0.5Na_0.5)TiO₃-(0.04-x)BaTiO₃-xLiNbO₃ Lead-Free Piezoceramics Near Morphotropic Phase Boundary