Preparation and study the structure of pure and impure barium titanate with Mg2+ ion

Wasan Abd Alsatar Hekmt

doi:10.30723/ijp.v16i37.91

Abstract

Pure and doped barium titanate with Mg2+ ion at two molar ratios x= (5%, 10%) mol. has been synthesized by solid state reaction technique. The powders sintered at two temperatures (1000 °C and 1400 °C). An XRD technique was used in order to study the crystal structure of pure and doped barium titanate, which confirmed the formation of the tetragonal phase of BaTiO3, and then calculate the lattice parameters of pure and doped barium titanate, the addition of magnesium ion Mg2+ can lead to decreases lattice parameters.

Highlights

Barium Titanate (BaTiO3) has become more important in ceramic material because of its chemically and mechanically stable [1], have ferroelectric and piezoelectric properties, has high dielectric constant and can be prepared
Barium titanate has been used in wide application such as capacitors and multilayer ceramic capacitors (MLCS) [2,3], Positive Temperature Coefficient (PTC) thermistors, piezoelectric transducers, variety of electro-optic devices and integral capacitors in printed circuit boards (PCB) [4]
At (1400 °C) temperature there was no residual material detected by XRD technique indicated to complete reaction, this reaction appears high resolution in 2θ position for peaks indicated to a good crystallinity and formation of Pure Barium Titanate (BaTiO3), diffraction peaks and miller indices at 2θ=44.950°, [002], 45.379°, [200], 50.704°, [102], 50.998°, [201], 51.096°, [210], 56.018°, [112] and 56.293°, [211], are widened gradually and lastly split during an increase in the calcinations temperature. This phenomenon refers to the of barium titanate (BaTiO3) phase was formed well with increases in calcinations temperature [15]

Summary

Introduction

Barium Titanate (BaTiO3) has become more important in ceramic material because of its chemically and mechanically stable [1], have ferroelectric and piezoelectric properties, has high dielectric constant and can be prepared. Experimental Pure and doped barium titanate was synthesized via solid state reaction, pure barium titanate (BaTiO3)(BT) was synthesized by mixing raw materials barium carbonate BaCO3 with purity (98%) and titanium dioxide TiO2 with purity (98%) of molar ratio [1:1], ethanol alcohol was added with purity

Results

Conclusion