Microwave absorption and magnetic properties of Ni-NiO-GO nanocomposites

IF 2.5 3区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Magnetism and Magnetic Materials Pub Date : 2025-01-23 DOI:10.1016/j.jmmm.2025.172819

Manas Kumar Mondal , Nupur Bhakta , Madhumita Dalal , Sukhendu Sadhukhan , Anupam Banerjee , Chandi Charan Dey , Souvick Das , P.K. Chakrabarti

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Abstract

Nanocomposite of Ni-NiO was synthesized using sol–gel technique. To enhance the synergistic effect the as-prepared nanocomposite was incorporated in graphene oxide (GO). Recorded X-ray diffractograms and their Rietveld refinement confirmed the desired crystallographic phase of the nanocomposite. Results and analyses of transmission electron microscopy and Raman spectroscopy established the presence of GO phase in Ni-NiO-GO. Conductivity measurements (J vs E curve) indicate the enhancement of conductivity due to which shielding property is enhanced in Ni-NiO-GO compared to Ni-NiO. Magnetic properties were investigated in detail and analysis of magnetic data showed that majority of the nanoparticles are in ferrimagnetic order state together with a presence of insignificant fraction of ferrimagnetic nanoparticles. Observed magnetic loops were also fitted theoretically. Interestingly, the microwave absorption suggested that shielding property was enhanced as a whole compared to Ni-NiO which is quite interesting for applications in shielding devices.

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来源期刊

Journal of Magnetism and Magnetic Materials 物理-材料科学：综合

CiteScore

5.30

自引率

11.10%

发文量

1149

审稿时长

59 days

期刊介绍： The Journal of Magnetism and Magnetic Materials provides an important forum for the disclosure and discussion of original contributions covering the whole spectrum of topics, from basic magnetism to the technology and applications of magnetic materials. The journal encourages greater interaction between the basic and applied sub-disciplines of magnetism with comprehensive review articles, in addition to full-length contributions. In addition, other categories of contributions are welcome, including Critical Focused issues, Current Perspectives and Outreach to the General Public. Main Categories: Full-length articles: Technically original research documents that report results of value to the communities that comprise the journal audience. The link between chemical, structural and microstructural properties on the one hand and magnetic properties on the other hand are encouraged. In addition to general topics covering all areas of magnetism and magnetic materials, the full-length articles also include three sub-sections, focusing on Nanomagnetism, Spintronics and Applications. The sub-section on Nanomagnetism contains articles on magnetic nanoparticles, nanowires, thin films, 2D materials and other nanoscale magnetic materials and their applications. The sub-section on Spintronics contains articles on magnetoresistance, magnetoimpedance, magneto-optical phenomena, Micro-Electro-Mechanical Systems (MEMS), and other topics related to spin current control and magneto-transport phenomena. The sub-section on Applications display papers that focus on applications of magnetic materials. The applications need to show a connection to magnetism. Review articles: Review articles organize, clarify, and summarize existing major works in the areas covered by the Journal and provide comprehensive citations to the full spectrum of relevant literature.