Structural and magnetic properties of aluminium substituted Ni-Cu spinel ferrite

IF 5.45 Q1 Physics and Astronomy

Nano-Structures & Nano-Objects Pub Date : 2024-09-06 DOI:10.1016/j.nanoso.2024.101325

P.B. Wasnik, K.G. Rewatkar, S.M. Suryawanshi, M.S. Bisen, S.D. Rokade

引用次数: 0

Abstract

Nickel-Copper spinel ferrite nanoparticles (NPs) with NiCuAlFeO with varying amounts of Aluminium (x = 0, 0.04,0.08,0.12) were synthesized using the microwave aided sol-gel method. The samples were analyzed using X-ray diffraction (XRD) to determine their structure. It was discovered that all the samples exhibited a cubic spinel structure and belonged to the Fd-3m space group. The crystallite size was found to be decreased from 45.21 nm to 37.34 nm with Al substitution. The TEM micrograph exhibits a nearly spherical morphology, with an average particle size of around 24.88 - 31.82 nm. The smooth M-H curve indicates the soft magnetic nature of prepared nanoparticles (NPs). The observed saturation magnetization (Ms) and coercivity (Hc) were found to initially increase until x=0.04, decreasing from 30.009 emu/g to 26.951 emu/g and 177.76 Oe to 164.20 Oe, respectively. This decrease is because of the decrease in nanocrystalline size and the distribution of cations in the spinel.

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铝取代镍铜尖晶石铁氧体的结构和磁性能

采用微波辅助溶胶-凝胶法合成了含不同量铝（x = 0、0.04、0.08、0.12）的镍铜尖晶石铁氧体纳米粒子（NPs）。利用 X 射线衍射 (XRD) 对样品进行了分析，以确定其结构。结果发现，所有样品都呈现立方尖晶石结构，属于 Fd-3m 空间群。晶体尺寸随着铝的替代从 45.21 nm 减小到 37.34 nm。TEM 显微照片显示出近似球形的形态，平均粒径约为 24.88 - 31.82 nm。平滑的 M-H 曲线表明制备的纳米颗粒（NPs）具有软磁性质。观察到的饱和磁化（Ms）和矫顽力（Hc）在 x=0.04 之前一直在增加，分别从 30.009 emu/g 降至 26.951 emu/g，从 177.76 Oe 降至 164.20 Oe。这种下降是由于尖晶石中纳米晶体尺寸和阳离子分布的减小。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nano-Structures & Nano-Objects Physics and Astronomy-Condensed Matter Physics

CiteScore

9.20

自引率

0.00%

发文量

审稿时长

22 days

期刊介绍： Nano-Structures & Nano-Objects is a new journal devoted to all aspects of the synthesis and the properties of this new flourishing domain. The journal is devoted to novel architectures at the nano-level with an emphasis on new synthesis and characterization methods. The journal is focused on the objects rather than on their applications. However, the research for new applications of original nano-structures & nano-objects in various fields such as nano-electronics, energy conversion, catalysis, drug delivery and nano-medicine is also welcome. The scope of Nano-Structures & Nano-Objects involves: -Metal and alloy nanoparticles with complex nanostructures such as shape control, core-shell and dumbells -Oxide nanoparticles and nanostructures, with complex oxide/metal, oxide/surface and oxide /organic interfaces -Inorganic semi-conducting nanoparticles (quantum dots) with an emphasis on new phases, structures, shapes and complexity -Nanostructures involving molecular inorganic species such as nanoparticles of coordination compounds, molecular magnets, spin transition nanoparticles etc. or organic nano-objects, in particular for molecular electronics -Nanostructured materials such as nano-MOFs and nano-zeolites -Hetero-junctions between molecules and nano-objects, between different nano-objects & nanostructures or between nano-objects & nanostructures and surfaces -Methods of characterization specific of the nano size or adapted for the nano size such as X-ray and neutron scattering, light scattering, NMR, Raman, Plasmonics, near field microscopies, various TEM and SEM techniques, magnetic studies, etc .