Fabrication and the Effects of the Experimental Structure Factor on Barium Titanate Ferroelectric Properties using Polydomain and Landau --- Khalatnikov Models

Author:

Adnan S.R.1,Kurniawan B.2,Soegijono B.2

Affiliation:

1. Universitas Esa Unggul; Universitas Indonesia

2. Universitas Indonesia

Abstract

In this report, powder of barium titanate (BaTiO3) was fabricated using the sol-gel method followed by a sintering process at 900 °C. X-ray diffraction (XRD) was carried out to determine the phase and the crystal structure of the barium titanate. XRD patterns were then refined using the Rietveld analysis method on Fullproof software. The results show the barium titanate (BaTiO3) phase has a tetragonal perovskite structure. EDAX and scanning electron microscope (SEM) were examined to analyze the chemical composition and morphology of the material powder respectively. The results showed that the powder barium titanate (BaTiO3) contains Ba, Ti, and O atoms. The crystallite size is 3 μm and the morphology look homogeneous. The structure factor obtained from the experiment is used to calculate the polarization hysteresis using Polydomain and Landau --- Khalatnikov models. The results of modeling using the structure factor approach using Landau --- Khalatnikov modified model and the Polydomain modified model showed the R-factor (Rwp) is 8.7 and 11.3 %

Publisher

Bauman Moscow State Technical University

Subject

General Physics and Astronomy,General Engineering,General Mathematics,General Chemistry,General Computer Science

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