“Sol-gel auto combustion synthesis of Al3+-Gd3+ ions co-doped cobalt ferrite nanoparticles for nanoelectronics applications”

IF 2.3 4区材料科学 Q2 MATERIALS SCIENCE, CERAMICS

Journal of Sol-Gel Science and Technology Pub Date : 2024-10-05 DOI:10.1007/s10971-024-06571-x

Vaibhav K. Raut, Sandeep B. Somvanshi, Elmuez A. Dawi, Chandrakant T. Birajdar

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Abstract

This study focused on investigating cobalt ferrite nanoparticles doped with trivalent Al³⁺ and Gd³⁺ ions across compositions ranging from CoFe_2-2xAl_xGd_xO₄ (x = 0.00, 0.02, 0.04, 0.06, 0.08). The nanoparticles were synthesized using the sol-gel auto-ignition method with citric acid as a chelating agent. Structural analysis via Rietveld-refined X-ray diffraction confirmed the formation of single-phase nanoparticles with a cubic spinel structure. Morphological examination through scanning electron microscopy revealed spherical-shaped grains. Elemental analysis using energy-dispersive X-ray analysis indicated consistent composition and high purity. Infrared spectra analysis verified the presence of characteristic modes typical of spinel ferrite structures. Magnetic properties assessed by vibrating sample magnetometry demonstrated soft magnetic behavior with lower coercivity. DC electrical resistivity measurements indicated a decrease in resistivity with increasing Al³⁺-Gd³⁺ co-doping, while dielectric studies showed enhanced properties in this regard. Overall, the findings suggest that these co-doped cobalt ferrite nanoparticles hold promise for applications in magneto-electronic devices.

Graphical Abstract

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"用于纳米电子应用的 Al3+-Gd3+ 离子共掺杂钴铁氧体纳米粒子的溶胶-凝胶自燃合成"

本研究重点研究了掺杂三价 Al3+ 和 Gd3+ 离子的钴铁氧体纳米粒子，其组成范围为 CoFe2-2xAlxGdxO4 (x = 0.00, 0.02, 0.04, 0.06, 0.08)。这些纳米粒子是以柠檬酸为螯合剂，采用溶胶-凝胶自燃法合成的。通过 Rietveld-refined X 射线衍射进行的结构分析证实，单相纳米粒子的形成具有立方尖晶石结构。通过扫描电子显微镜进行的形态学检查发现了球形颗粒。利用能量色散 X 射线分析法进行的元素分析表明，该物质成分一致，纯度很高。红外光谱分析证实了尖晶石铁氧体结构的典型特征模式。通过振动样品磁力计评估的磁性能表明，该材料具有较低矫顽力的软磁特性。直流电阻率测量结果表明，随着 Al3+-Gd3+ 共掺量的增加，电阻率有所下降，而介电研究则显示这方面的特性有所增强。总之，研究结果表明，这些共掺杂钴铁氧体纳米粒子有望应用于磁电子器件。

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来源期刊

Journal of Sol-Gel Science and Technology 工程技术-材料科学：硅酸盐

CiteScore

4.70

自引率

4.00%

发文量

280

审稿时长

2.1 months

期刊介绍： The primary objective of the Journal of Sol-Gel Science and Technology (JSST), the official journal of the International Sol-Gel Society, is to provide an international forum for the dissemination of scientific, technological, and general knowledge about materials processed by chemical nanotechnologies known as the "sol-gel" process. The materials of interest include gels, gel-derived glasses, ceramics in form of nano- and micro-powders, bulk, fibres, thin films and coatings as well as more recent materials such as hybrid organic-inorganic materials and composites. Such materials exhibit a wide range of optical, electronic, magnetic, chemical, environmental, and biomedical properties and functionalities. Methods for producing sol-gel-derived materials and the industrial uses of these materials are also of great interest.