Mg0.946Cu2.054O3 化合物的结构和磁性研究

IF 2.5 3区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Journal of Magnetism and Magnetic Materials Pub Date : 2024-10-03 DOI:10.1016/j.jmmm.2024.172568

Somesh Chandra , Balmukund Shukla , V. Srihari , Rajkumar Gupta , Uday Deshpande , R. Venkatesh , Sujay Chakravarty , G.M. Bhalerao , R Govindaraj

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引用次数: 0

摘要

通过对粉末 X 射线衍射 (XRD) 进行里特维尔德细化，对合成的 Mg0.946Cu2.054O3 化合物的晶体结构进行了研究，结果表明存在反斜长石缺陷，即镁原子位点被铜原子取代，取代率高达 9%。通过对 95 K 及以下反铁磁性奈尔转变附近的磁性测量进行详细研究，暗示由于存在反斜长石缺陷而存在顺磁成分和短程有序，比热测量进一步证实了这一点。

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Investigation of structural and magnetic properties of Mg0.946Cu2.054O3 compound

The crystal structure of synthesized Mg_0.946Cu_2.054O₃ compound was examined using Rietveld refinement of powder X-ray diffraction (XRD), revealing the presence of antisite defects in the form of substitution occupation of Mg atomic sites by Cu atoms upto ∼9 %. Detailed investigation by magnetic measurements around antiferromagnetic Néel transition around 95 K and below hints at the existence of paramagnetic component and short-range order due to presence of antisite defects, which is further supported by specific heat measurements.

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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.