Structure and Electrical Characteristics of BaTiO3 and Ba0.99Er0.01TiO3 Ceramics

F. A. Ismail; Rozana Aina Maulat Osman; Mohd Sobri Idris; N.A.M. Ahmad Hambali

doi:10.4028/www.scientific.net/SSP.280.127

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HomeSolid State PhenomenaSolid State Phenomena Vol. 280Structure and Electrical Characteristics of BaTiO3...

Structure and Electrical Characteristics of BaTiO₃ and Ba_0.99Er_0.01TiO₃ Ceramics

Abstract:

Conventional solid state reaction method was used to prepare BaTiO₃ and Ba_0.99Er_0.01TiO₃ ceramics. Influence of Er³⁺ ion incorporation on their structural, microstructural and electrical properties was studied. The phase pure samples were obtained when heated at 1400 °C for overnight. The tetragonal perovskite phase of BaTiO₃ and Ba_0.99Er_0.01TiO₃ was confirmed by using X-ray Diffraction (XRD) analysis which is in agreement with results obtained from Rietveld refinement analysis. The lattice parameters and unit cell volume of BaTiO₃ increased when doped with Erbium. Microstructural analysis of BaTiO₃ and Ba_0.99Er_0.01TiO₃ ceramics showed that the grain sizes of BaTiO₃ and Ba_0.99Er_0.01TiO₃ significantly decreased. The dielectric properties of BaTiO₃ and Ba_0.99Er_0.01TiO₃ were investigated as a function of temperature and frequency. It revealed that the Curie temperature (T_C) increased by doping Er content from 110 °C to 120 °C. Ba_0.99Er_0.01TiO₃ exhibited the high value of dielectric constant (ε=5929) at T_C of 120 °C. The capacitance-voltage characteristic revealed that the voltage breakdown for both BaTiO₃ and Ba_0.99Er_0.01TiO₃ exceeded 30 V.

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Solid State Phenomena (Volume 280)

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127-133

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.280.127

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August 2018

Authors:

F. A. Ismail, Rozana Aina Maulat Osman, Mohd Sobri Idris, N.A.M. Ahmad Hambali

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Electrical Properties, Microstructure, Rietveld Refinement Analysis, Solid State Reaction

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