Influence of lithium disilicate addition on the dielectric properties of chemically synthesized CaCusub(3)Tisub(4)Osub(12)
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2015
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Journal of Materias Science: Materials in Electronics
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The effects of the method of synthesis along
with the introduction of a sintering aid on the electric and
dielectric properties of CaCu3Ti4O12 were investigated in
detail. The mixed oxide with perovskite structure was
synthesized by the coprecipitation method. Polycrystalline
specimens were prepared by adding 0.5 mol% Li2Si2O5 to
the mixed oxide followed by sintering in the 1000–1100 C
range for 12 h. A high density value was obtained for
sintering at a temperature as low as 1000 C. Average grain
sizes of sintered specimens are of the same order of magnitude as those of specimens prepared by the same method
without the additive. The activation energy values for
electric conduction were found to be 0.1 eV (grain) and
varying from 0.4 to 0.6 eV (grain boundary). The dielectric
properties are similar to those of specimens without the
additive. The overall results evidence the possibility of
reduction of the sintering temperature by about 100 C
with the introduction of a small amount of lithium disilicate while keeping the dielectric properties of pure
CaCu3Ti4O12.
Como referenciar
PORFIRIO, T.C.; MUCCILLO, E.N.S. Influence of lithium disilicate addition on the dielectric properties of chemically synthesized CaCusub(3)Tisub(4)Osub(12). Journal of Materias Science: Materials in Electronics, v. 26, n. 6, p. 3970-3975, 2015. DOI: 10.1007/s10854-015-2932-4. Disponível em: http://repositorio.ipen.br/handle/123456789/23851. Acesso em: 02 Jun 2024.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.