多层结构中钛酸铁（FeTiO3）的结构、磁性和阻抗特性的形态学调控

IF 5.1 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Ceramics International Pub Date : 2025-06-01 DOI:10.1016/j.ceramint.2025.02.208

Faiza Arshad , Attia Awan , Muqarrab Ahmed , Nadia Anwar , Y.B. Xu , Shahzad Naseem , Wen-Cheng Lai , Saira Riaz

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引用次数: 0

摘要

采用电沉积技术制备了钛酸铁（FeTiO3）纳米针状薄膜，电解液的摩尔浓度为0.01 ~ 0.1M。在低摩尔浓度下观察到FeTiO3和TiO2的混合相。而FeTiO3相在其余的摩尔浓度下均存在。在0.08M-0.1M的扫描电镜下观察到直径为~ 50 nm的纳米针。利用WIEN2K代码和GGA-PBEsol软件对FeTiO3 （R3c, 161）进行了DFT计算。电介质分析表明钛酸铁电沉积薄膜具有正常的色散行为。用相对较高的摩尔浓度制备的样品具有较高的介电常数。钛酸铁薄膜在较高的摩尔浓度下呈现饱和铁磁MH曲线。功函数和磁场相关的饱和度和电阻率表明了所研究材料在先进电子应用中的潜在用途。

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Morphologically controlled tuning of structural, magnetic and impedance properties of iron titanate (FeTiO3) for multilayered structures

Nanoneedles-based thin films of iron titanate (FeTiO₃) are prepared using the electrodeposition technique with the electrolyte molarity varied from 0.01M to 0.1M. Mixed phases i.e. FeTiO₃ and TiO₂ are observed at low molarities. While FeTiO₃ phase is observed at rest of molarities. Nanoneedles with diameters of ∼50 nm are observed using scanning electron microscopy for 0.08M–0.1M. DFT calculations of FeTiO₃ (R3c, 161) are performed using the WIEN2K code with GGA-PBEsol. Dielectric analysis shows normal dispersion behavior of electrodeposited iron titanate thin films. A high value of dielectric constant is observed for the samples prepared with relatively high molarity values. Iron titanate thin films exhibit saturated ferromagnetic MH curves at higher molarities. Work function and magnetic field dependent saturation and resistivity suggest the potential use of the studied material in advanced electronic applications.

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来源期刊

Ceramics International 工程技术-材料科学：硅酸盐

CiteScore

9.40

自引率

15.40%

发文量

4558

审稿时长

25 days

期刊介绍： Ceramics International covers the science of advanced ceramic materials. The journal encourages contributions that demonstrate how an understanding of the basic chemical and physical phenomena may direct materials design and stimulate ideas for new or improved processing techniques, in order to obtain materials with desired structural features and properties. Ceramics International covers oxide and non-oxide ceramics, functional glasses, glass ceramics, amorphous inorganic non-metallic materials (and their combinations with metal and organic materials), in the form of particulates, dense or porous bodies, thin/thick films and laminated, graded and composite structures. Process related topics such as ceramic-ceramic joints or joining ceramics with dissimilar materials, as well as surface finishing and conditioning are also covered. Besides traditional processing techniques, manufacturing routes of interest include innovative procedures benefiting from externally applied stresses, electromagnetic fields and energetic beams, as well as top-down and self-assembly nanotechnology approaches. In addition, the journal welcomes submissions on bio-inspired and bio-enabled materials designs, experimentally validated multi scale modelling and simulation for materials design, and the use of the most advanced chemical and physical characterization techniques of structure, properties and behaviour. Technologically relevant low-dimensional systems are a particular focus of Ceramics International. These include 0, 1 and 2-D nanomaterials (also covering CNTs, graphene and related materials, and diamond-like carbons), their nanocomposites, as well as nano-hybrids and hierarchical multifunctional nanostructures that might integrate molecular, biological and electronic components.