钴掺杂镍锰尖晶石纳米铁氧体的表征：结构、光学、弹性和磁性能的多方面评估

IF 2.9 3区物理与天体物理 Q3 NANOSCIENCE & NANOTECHNOLOGY

Physica E-low-dimensional Systems & Nanostructures Pub Date : 2024-09-28 DOI:10.1016/j.physe.2024.116112

B. Aghalli , H. Khandan Fadafan , M.B. Bagherieh Najjar

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引用次数: 0

摘要

本研究介绍了纳米晶 CoxNi0.5-xMn0.5Fe2O4 (0.0 ≤ x ≤ 0.5) 铁氧体的合成和综合评估。我们利用多种分析技术，包括 X 射线衍射 (XRD)、傅立叶变换红外光谱 (FTIR)、紫外可见光谱 (UV-Vis)、场发射扫描电子显微镜 (FESEM) 和振动样品磁力计 (VSM)，对合成纳米粒子的结构、光学、弹性和磁性能进行了表征。我们的研究结果表明，钴含量的增加会导致晶格常数从 8.33 Å 系统性地增加到 8.39 Å，并影响晶粒大小，X 射线衍射仪测定的晶粒大小在 10 到 15 nm 之间。值得注意的是，这些纳米粒子的带隙在 2.8 至 3.6 eV 之间，随 Co 浓度的变化而变化。磁性测量结果表明，随着钴含量的增加，从 x = 0 时的超顺磁性行为过渡到饱和磁化、剩磁和矫顽力的增强。这项研究的新颖之处在于，镍锰纳米铁氧体的钴替代与多种物理性质的变化之间存在着详细的关联，这为磁存储、传感器和生物医学应用等各种技术领域提供了潜在的应用前景。

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Characterization of Co-doped Ni-Mn spinel nanoferrites: A Multi-faceted evaluation of structural, optical, elastic, and magnetic properties

This study presents the synthesis and comprehensive evaluation of nanocrystalline Co_xNi_0.5-xMn_0.5Fe₂O₄ (0.0 ≤ x ≤ 0.5) ferrites. Utilizing a variety of analytical techniques including X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), ultraviolet-visible (UV–Vis) spectroscopy, field emission scanning electron microscopy (FESEM), and vibrating sample magnetometry (VSM), we characterized the structural, optical, elastic, and magnetic properties of the synthesized nanoparticles. Our findings reveal that increasing Co content leads to a systematic increase in lattice constant from 8.33 Å to 8.39 Å and influences the crystallite size, which ranges between 10 and 15 nm as determined by XRD. Notably, the band gaps of these nanoparticles span from 2.8 to 3.6 eV, varying with Co concentration. Magnetic measurements indicate a transition from superparamagnetic-like behavior at x = 0 to enhanced saturation magnetization, remanence, and coercivity with higher Co content. The novelty of this research lies in the detailed correlation between Co substitution and the resultant changes in multiple physical properties of NiMn nanoferrite, offering potential applications in various technological fields such as magnetic storage, sensors, and biomedical applications.

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来源期刊

Physica E-low-dimensional Systems & Nanostructures 物理-纳米科技

CiteScore

7.30

自引率

6.10%

发文量

356

审稿时长

65 days

期刊介绍： Physica E: Low-dimensional systems and nanostructures contains papers and invited review articles on the fundamental and applied aspects of physics in low-dimensional electron systems, in semiconductor heterostructures, oxide interfaces, quantum wells and superlattices, quantum wires and dots, novel quantum states of matter such as topological insulators, and Weyl semimetals. Both theoretical and experimental contributions are invited. Topics suitable for publication in this journal include spin related phenomena, optical and transport properties, many-body effects, integer and fractional quantum Hall effects, quantum spin Hall effect, single electron effects and devices, Majorana fermions, and other novel phenomena. Keywords: • topological insulators/superconductors, majorana fermions, Wyel semimetals; • quantum and neuromorphic computing/quantum information physics and devices based on low dimensional systems; • layered superconductivity, low dimensional systems with superconducting proximity effect; • 2D materials such as transition metal dichalcogenides; • oxide heterostructures including ZnO, SrTiO3 etc; • carbon nanostructures (graphene, carbon nanotubes, diamond NV center, etc.) • quantum wells and superlattices; • quantum Hall effect, quantum spin Hall effect, quantum anomalous Hall effect; • optical- and phonons-related phenomena; • magnetic-semiconductor structures; • charge/spin-, magnon-, skyrmion-, Cooper pair- and majorana fermion- transport and tunneling; • ultra-fast nonlinear optical phenomena; • novel devices and applications (such as high performance sensor, solar cell, etc); • novel growth and fabrication techniques for nanostructures