Bismuth titanate from coprecipitated stoichiometric hydroxide precursors

Umabala, A.M.; Suresh, M. Buchi; Prasadarao, A. V.

doi:10.1016/s0167-577x(00)00022-7

Cited by 34 publications

(22 citation statements)

References 11 publications

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“…Among them, bismuth titanates have demonstrated promising optoelectronic properties 3 , such as ferroelectricity, photoconductivity and piezoelectricity 1,[4][5][6] . These characteristics make them an alternative to lead-containing materials, being useful for several devices including optical displays, capacitors, catalysts, sensors and transducers, among other applications [7][8][9][10][11][12][13][14][15] .…”

Section: Introductionmentioning

confidence: 99%

“…2-pseudoperovskite-sheets 3,5,6,9,10,12,[18][19][20][21] along the c-axis 22 . This phase presents a significant thermal stability, which melts around 1200ºC 4,23 .…”

Section: Introductionmentioning

confidence: 99%

“…Different synthesis routes have been proposed for production of bismuth titanates and related materials. Methods such as sol-gel 3 , polymeric precursors 24 , high energy milling 25,26 , hydrothermal 10,18,27 and coprecipitation 6,9 have been assessed for their production. In addition, the use of the solution combustion route has been reported in some studies with promising results 20,22 .…”

Section: Introductionmentioning

confidence: 99%

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Production of Nanometric Bi4Ti3O 12 Powders: from Synthesis to Optical and Dielectric Properties

et al. 2018

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This paper aims to evaluate the synthesis and annealing parameters for production of nanometric Bi 4 Ti 3 O 12 and its properties. The powders were obtained through the solution combustion route and the impacts of annealing temperature on the materials' physicochemical features as well as their optical and electrical properties were investigated. Thus, the prepared powders were annealed at 600ºC, 700ºC and 800ºC and then characterized by several techniques. The results demonstrated that the combustion method was effective for production of nanocrystalline powders with high levels of purity. A trend for particle and crystallite growth was observed as the calcination temperature increased. X-Ray, HRTEM and Raman spectroscopy confirmed the crystalline nature of the powders, whereas impedance spectroscopy demonstrated a reduction of electrical resistance according to the calcination temperature applied. Optical properties were not highly influenced by annealing. The temperature of 600ºC was appropriate to produce crystalline particles with desirable low sizes for application.

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Section: Introductionmentioning

confidence: 99%

“…2-pseudoperovskite-sheets 3,5,6,9,10,12,[18][19][20][21] along the c-axis 22 . This phase presents a significant thermal stability, which melts around 1200ºC 4,23 .…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Production of Nanometric Bi4Ti3O 12 Powders: from Synthesis to Optical and Dielectric Properties

et al. 2018

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“…However, regretfully, the method need high temperature (around 800∼1000 • C) and therefore results in high agglomeration and compositional inhomogeneity of powders. Several alternative chemical synthesis routes have been proposed including co-precipitation method [9], hydrothermal [10], sol-gel process [11], polymeric precursor method [12], citrate method [13], urea method [14] and so on. In comparison with other techniques, the sol-gel process has some advantages, including its versatility, the homogeneity and purity of the products, and the variations in stoichiometry which can be achieved.…”

Section: Introductionmentioning

confidence: 99%

Low-temperature preparation of nanoplated bismuth titanate microspheres by a sol–gel-hydrothermal method

Chen

2010

Journal of Alloys and Compounds

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“…Solid state reactions employed for the synthesis of BIT powders require relatively high temperatures (>1,100°C) [14]. Several soft chemical routes were used for the preparation of BIT ceramics, including the coprecipitation method [15,16], molten salt synthesis [17], and sol-gel process [18,19]. In contrast, there have been only a few reports on the soft chemical synthesis of BLT powders and ceramics.…”

Section: Introductionmentioning

confidence: 99%

Ferroelectric Bi4Ti3O12 and Bi4−x La x Ti3O12 ceramics prepared by a new sol-gel route

Babooram

Chin

2007

J Electroceram

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Ceramics of bismuth titanate, Bi 4 Ti 3 O 12 (BIT) and the La-doped series, Bi 4−x La x Ti 3 O 12 (xBLT) with x= 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, and 0.75, have been synthesized by a new sol-gel process based on ethylene glycol. La-doping is found to reduce the temperature of the formation of pure Bi-layer-structured phase from 600°C in BIT and low La-doped xBLT (x=0.1-0.3) to 500°C in high La-doped xBLT (x=0.4-0.75). Increasing the La-content in the xBLT ceramics decreases the contribution of the space charge polarization to the apparent dielectric permittivity. The ceramics of xBLT prepared by this sol-gel route exhibit improved dielectric properties, with a higher room temperature dielectric constant and lower losses up to high temperatures.

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Bismuth titanate from coprecipitated stoichiometric hydroxide precursors

Cited by 34 publications

References 11 publications

Production of Nanometric Bi4Ti3O 12 Powders: from Synthesis to Optical and Dielectric Properties

Production of Nanometric Bi4Ti3O 12 Powders: from Synthesis to Optical and Dielectric Properties

Low-temperature preparation of nanoplated bismuth titanate microspheres by a sol–gel-hydrothermal method

Ferroelectric Bi4Ti3O12 and Bi4−x La x Ti3O12 ceramics prepared by a new sol-gel route

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