Synthesis, thermal and magnetic properties of nanoceramics with a multilayer Aurivillius phase type

IF 3.9 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY Materials Science and Engineering: B Pub Date : 2024-09-28 DOI:10.1016/j.mseb.2024.117734

N.A. Lomanova , V.L. Ugolkov , M.P. Volkov , S.G. Yastrebov

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Abstract

We report the co-precipitation synthesis and properties of nanomaterials with multilayer Aurivillius phase structures Bi_m₊₁Fe_m_-3Ti₃O₃_m₊₃ (BFTO). This paper discusses the thermal behavior of materials based on seven-layer and eight-layer compounds and presents their magnetic characteristics. The structure and morphology were characterized using PXRD, helium pycnometry, and SEM/EDX. Thermal analyses were conducted using DSC/TG. The sintering behavior was investigated through dilatometry. Mössbauer spectroscopy revealed that varying the synthesis conditions allows control over the iron distribution within the Aurivillius phase structure. Spin-phonon coupling effects were examined using Raman spectroscopy. The magnetic characteristics were assessed using vibrating-sample magnetometry. The magnetic properties were analyzed by measuring the temperature dependence of magnetization and magnetic hysteresis loops. The magnetic experiments demonstrated that the composition has a more significant impact on the BFTO magnetic response than the size effect. The results of this study suggest that the obtained materials have promising functional applications.

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多层 Aurivillius 相型纳米陶瓷的合成、热学和磁学特性

我们报告了具有多层奥里维柳斯相结构 Bim+1Fem-3Ti3O3m+3 (BFTO) 的纳米材料的共沉淀合成及其特性。本文讨论了基于七层和八层化合物的材料的热行为，并介绍了它们的磁特性。使用 PXRD、氦气比重计和 SEM/EDX 对结构和形貌进行了表征。使用 DSC/TG 进行了热分析。烧结行为通过扩张仪进行了研究。莫斯鲍尔光谱显示，改变合成条件可以控制奥里维利相结构中的铁分布。拉曼光谱检测了自旋-声子耦合效应。利用振动样品磁力计评估了磁特性。通过测量磁化和磁滞回线的温度依赖性分析了磁特性。磁性实验表明，与尺寸效应相比，成分对 BFTO 磁响应的影响更为显著。研究结果表明，所获得的材料具有良好的功能应用前景。

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来源期刊

Materials Science and Engineering: B 工程技术-材料科学：综合

CiteScore

5.60

自引率

2.80%

发文量

481

审稿时长

3.5 months

期刊介绍： The journal provides an international medium for the publication of theoretical and experimental studies and reviews related to the electronic, electrochemical, ionic, magnetic, optical, and biosensing properties of solid state materials in bulk, thin film and particulate forms. Papers dealing with synthesis, processing, characterization, structure, physical properties and computational aspects of nano-crystalline, crystalline, amorphous and glassy forms of ceramics, semiconductors, layered insertion compounds, low-dimensional compounds and systems, fast-ion conductors, polymers and dielectrics are viewed as suitable for publication. Articles focused on nano-structured aspects of these advanced solid-state materials will also be considered suitable.