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

Q3 Mathematics

Herald of the Bauman Moscow State Technical University. Series Natural Sciences Pub Date : 2023-06-01 DOI:10.18698/1812-3368-2023-3-131-144

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

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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 %

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利用多畴模型和朗道-卡拉特尼科夫模型制备钛酸钡铁电性能及其实验结构因子的影响

本文采用溶胶-凝胶法制备钛酸钡粉体(BaTiO3)，并在900℃下进行烧结。采用x射线衍射(XRD)测定了钛酸钡的物相和晶体结构。然后在Fullproof软件上使用Rietveld分析方法对XRD谱图进行细化。结果表明，钛酸钡(BaTiO3)相具有四方钙钛矿结构。利用电子能谱(EDAX)和扫描电子显微镜(SEM)分别分析了材料粉末的化学成分和形貌。结果表明，粉末钛酸钡(BaTiO3)含有Ba、Ti和O原子。晶粒尺寸为3 μm，形貌均匀。利用实验得到的结构因子，利用Polydomain模型和Landau—Khalatnikov模型计算极化迟滞。采用Landau—Khalatnikov修正模型和Polydomain修正模型的结构因子方法进行建模的结果表明，r因子(Rwp)分别为8.7%和11.3%

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来源期刊

Herald of the Bauman Moscow State Technical University. Series Natural Sciences Mathematics-Mathematics (all)

CiteScore

1.10

自引率

0.00%

发文量

期刊介绍： The journal is aimed at publishing most significant results of fundamental and applied studies and developments performed at research and industrial institutions in the following trends (ASJC code): 2600 Mathematics 2200 Engineering 3100 Physics and Astronomy 1600 Chemistry 1700 Computer Science.