Influence of Ti-Zn doping on the structural, ferroelectric and optical properties of BiFeO3 ceramics synthesized via the solid-state reaction

IF 3.3 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Solid State Sciences Pub Date : 2025-08-08 DOI:10.1016/j.solidstatesciences.2025.108047

J.C. Leal-Zayas , J.M. Yáñez-Limón , C. Vargas-Arana , J. Flores-Valenzuela , J.E. Leal-Perez , R.A. Vargas-Ortiz

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Abstract

BiFeO₃ is a perovskite-type structure material with diverse applications in modern devices. In this study, powders and bulk ceramics of the solid solution BiFe_1-2xTi_xZn_xO₃, also known as BFTZ, were synthesized via a solid-state reaction, and their physical properties were analyzed. Structural properties obtained by X-ray diffraction and Rietveld refinements revealed that the incorporation of Ti and Zn ions in the solid solution increased the lattice parameter “a” (from 5.5825 Å to 5.6039 Å) and decreased the “c” parameter (from 13.8720 Å to 13.7713 Å). The coexistence of the R3c and P4mm crystalline phases was determined, specifically the phase transition from R3c to P4mm with the addition of 10 % Ti–Zn in the solid solution. Scanning electron micrographs revealed a decrease in the average grain size from 624 nm to 221 nm. Ferroelectric measurements revealed an increase in the remnant polarization from 0.058 μC/cm² to 0.863 μC/cm². Finally, the material's band gap remained within the visible light range in all samples, increasing from 2.26 eV to 2.35 eV. This demonstrates that the obtained material is a candidate for use in optoelectronic devices with ferroelectric properties.

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Ti-Zn掺杂对固相反应合成的BiFeO3陶瓷结构、铁电性能和光学性能的影响

BiFeO3是一种钙钛矿型结构材料，在现代设备中具有多种应用。本研究通过固相反应合成了固溶体BiFe1-2xTixZnxO3（也称为BFTZ）的粉末和块状陶瓷，并对其物理性能进行了分析。通过x射线衍射和Rietveld细化得到的结构性质表明，Ti和Zn离子在固溶体中的掺入增加了晶格参数“a”（从5.5825 Å到5.6039 Å），降低了“c”参数（从13.8720 Å到13.7713 Å）。确定了R3c和P4mm晶相的共存，特别是在固溶体中添加10% Ti-Zn时，从R3c到P4mm的相变。扫描电镜显示，平均晶粒尺寸从624 nm减小到221 nm。铁电测量表明，残余极化从0.058 μC/cm2增加到0.863 μC/cm2。最后，材料的带隙在所有样品中都保持在可见光范围内，从2.26 eV增加到2.35 eV。这表明所获得的材料是用于具有铁电性质的光电器件的候选材料。

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来源期刊

Solid State Sciences 化学-无机化学与核化学

CiteScore

6.60

自引率

2.90%

发文量

214

审稿时长

27 days

期刊介绍： Solid State Sciences is the journal for researchers from the broad solid state chemistry and physics community. It publishes key articles on all aspects of solid state synthesis, structure-property relationships, theory and functionalities, in relation with experiments. Key topics for stand-alone papers and special issues: -Novel ways of synthesis, inorganic functional materials, including porous and glassy materials, hybrid organic-inorganic compounds and nanomaterials -Physical properties, emphasizing but not limited to the electrical, magnetical and optical features -Materials related to information technology and energy and environmental sciences. The journal publishes feature articles from experts in the field upon invitation. Solid State Sciences - your gateway to energy-related materials.