Dielectric and microstructural properties of BaTiO3 and Ba0.9925Er0.0075TiO3 ceramics

Fatin Adila Ismail; Rozana Aina Maulat Osman; Mohd Sobri Idris; Sanna Taking; Zul Azhar Zahid Jamal

doi:10.1051/epjconf/201716201051

Proceedings

Open Access

EPJ Web of Conferences 162, 01051 (2017)
https://doi.org/10.1051/epjconf/201716201051

Dielectric and microstructural properties of BaTiO₃ and Ba_0.9925Er_0.0075TiO₃ ceramics

Fatin Adila Ismail¹^,2^*, Rozana Aina Maulat Osman¹^,2, Mohd Sobri Idris¹^,3, Sanna Taking² and Zul Azhar Zahid Jamal²

¹ CoE Frontier Materials Research, School of Material Engineering, Universiti Malaysia Perlis, 01000 kangar, Perlis, Malaysia
² School of Microelectronic Engineering, Universiti Malaysia Perlis, 02600 Arau, Perlis, Malaysia
³ School of Material Engineering, Universiti Malaysia Perlis, 02600 Arau, Perlis, Malaysia

^* Corresponding author: fatinadilaismail@gmail.com

Published online: 22 November 2017

Abstract

BaTiO₃ and Ba_0.9925Er_0.0075TiO₃ ceramics were investigated regarding their dielectric and microstructure properties via conventional solid state reaction method. The phase pure samples were obtained when heated at 1400°C for overnight. The effect of Er³⁺ doped into BaTiO3 on dielectric properties and microstructural properties was investigated for composition of BaTiO₃ and Ba_0.9925Er_0.0075TiO₃. The analysis was made by X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM) and Impedance Analyzer. The XRD patterns of BaTiO₃ and Ba_0.9925Er_0.0075TiO₃ are phase pure and identical with tetragonal perovskite structure with space group of P4mm. The lattice parameters and unit cell volume of BaTiO₃ increased by doping with Erbium as the crystallite size decreased. Measurements of dielectric properties were carried out as a function of temperature up to 200°C at different frequencies. Ba_0.9925Er_0.0075TiO₃ exhibit the high value of dielectric constant (ε=6179) at Curie temperature (T_C) of 120°C. SEM analysis of BaTiO₃ and Ba_0.9925Er_0.0075TiO₃ ceramics showed that the grain sizes of BaTiO₃ and Ba_0.9925Er_0.0075TiO₃ were ranged from 3.3µm-7.8µm and 2.2µm-4.7µm respectively.

© The Authors, published by EDP Sciences, 2017

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