Sintering temperature influence on phase stability in barium titanate ceramics with very small grain size

Valero, Constantino; Mundi, M.; Gallardo, Clarissa; Criado, J. M.; Gotor, F.J.; Bhalla, A. S.

doi:10.1080/00150199208223347

Cited by 6 publications

(1 citation statement)

References 4 publications

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“…The dielectric constant of the BaTiO 3 -Ni is much higher than that of the pure BaTiO 3 in the entire range of temperature studied, while the maximum values for both pure BaTiO 3 and BaTiO 3 -Ni are 470 and 10850, respectively. Additionally, the maximum of the dielectric constant that occurs at 122-125ºC [25][26][27][28][29][30] in BaTiO 3 and is associatecd to a ferroelectric (tetragonal) to paraelectric (cubic) phase transition is moved down to 82ºC in the BaTiO 3 -Ni nanocomposite. Moreover, the very low dielectric loss of this composite (about 0.04) supports the high quality of the dielectric here prepared.…”

Section: Methodsmentioning

confidence: 99%

Mechanochemical preparation of BaTiO3–Ni nanocomposites with high dielectric constant

Jiménez

Pérez‐Maqueda

Diánez

et al. 2010

Composite Structures

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A mechanochemical procedure is proposed for an easy preparation of a BaTiO 3 -Ni composite in a single steep. BaTiO 3 and Ni powders available in the market are mixed by dry ball milling producing a decrease of particle size and an evenly distribution of both phases. In the sintered pellets the nickel particles are homogeneously distributed into the BaTiO 3 matrix and isolated from others Ni particles. The dielectric constant of the composite is considerably higher than that of the barium titanate. Moreover, the temperature of the ferroelectric ↔ paraelectric transition of the BaTiO 3 -Ni composite here prepared is much lower than the one of the pure BaTiO 3 single phase.

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Section: Methodsmentioning

confidence: 99%