Double Injection Synthesis and Dispersion of Submicrometer Barium Titanyl Oxalate Tetrahydrate

Kimel, R. Allen; Ganine, Vladimir; Adair, James H.

doi:10.1111/j.1151-2916.2001.tb00809.x

Cited by 6 publications

(4 citation statements)

References 6 publications

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“…The best linear fit gives the correct value of n. The value of activation energy can be calculated from the slope of a linear plot. The value of frequency factor can be obtained from Equation (5). Equation 5is applied for all values of n, except n = 1.…”

Section: The Coats and Redfern Methodsmentioning

confidence: 99%

“…With its excellent thermal stability and hardness, this material has found a wide range of applications in fire creeker industries as a pyro colorant [2], and to improve hardness of barium titinate in capacitor industries [3]. Nano-particles of barium oxalate [4] and barium titanyl oxalate have shown its effect on semiconducting properties [5].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Pyro and Kinetic Studies of Barium Oxalate Crystals Grown in Agar Gel

Dalal¹,

Saraf²,

Shimpi³

et al. 2012

JCPT

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Single crystals of barium oxalate have been grown using gel method at ambient temperature. Thermal characteristics and kinetic parameters of barium oxalate crystals were determined by thermo-gravimetric (TG) analysis under non-isothermal heating conditions. The pyrolysis experiments were performed with increasing temperature up-to 600℃ at heating rate of 5℃, 7℃ and 10℃ in nitrogen gas atmosphere. The pyrolysis curve showed that loss of mass took place mainly in the range of 220℃ - 400℃. At higher temperature there was a significant mass loss due to decomposition of oxalates. Ozawa and Coats & Redfern methods were used to determine the apparent activation energies of material degradation. The apparent activation energies for barium oxalate crystals were obtained 187.42 KJ·mol<sup>-1</sup> and 185.4 KJ·mol<sup>-1</sup> for the respective methods

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Section: The Coats and Redfern Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Pyro and Kinetic Studies of Barium Oxalate Crystals Grown in Agar Gel

Dalal¹,

Saraf²,

Shimpi³

et al. 2012

JCPT

View full text Add to dashboard Cite

show abstract

“…Solid-state carbonate reactions, 2 a modified Clabaugh process, 3 low-temperature direct synthesis (LTDS), 4 and several other routes [5][6][7] have all been investigated. Solid-state carbonate reactions, 2 a modified Clabaugh process, 3 low-temperature direct synthesis (LTDS), 4 and several other routes [5][6][7] have all been investigated.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of nanotabular barium titanate via a hydrothermal route

et al. 2005

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As layer thickness of multilayer ceramic capacitors decreases, nanoparticles of high dielectric materials, especially BaTiO 3, are needed. Tabular metal nanoparticles produce thin metal layers with low surface roughness via electrophoretic deposition. To achieve similar results in dielectric layers requires the synthesis and dispersion of tabular BaTiO 3 nanoparticles. In the current study, the synthesis of BaTiO 3 was investigated using a hydrothermal route. Transmission electron microscopy and atomic force microscpy analyses show that the synthesized particles are single crystal with a 〈111〉 zone axis and a median thickness of 5.8 nm and face diameter of 27.1 nm. Particle growth is likely controlled by the formation of {111} twins and the synthesis pH, which stabilizes the {111} face during growth. With limited growth in the 〈111〉 direction, the particles develop a platelike morphology. Physical property characterization shows the powder is of high purity with low hydrothermal defect concentrations and controlled stoichiometry.

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“…The high dielectric constant and melting point of barium oxalate is an advantage to improve hardness of barium titanate in capacitor industries [5]. Nano-particles of barium oxalate [6] and barium titanyl oxalate have shown its effect on semiconducting properties [7]. A research program on etching and micro-topographical studies of barium oxalate crystals is being carried out in this laboratory.…”

Section: Introductionmentioning

confidence: 99%