Curie temperature control in Zn-Fe ferrite superparamagnetic nanoparticles

IF 2.5 3区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Journal of Magnetism and Magnetic Materials Pub Date : 2024-09-02 DOI:10.1016/j.jmmm.2024.172497

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Abstract

The control of the Curie temperature can be used as an intrinsic safety switch for magnetic induction heating applications, such as magnetic hyperthermia, heat generation devices and heat dissipation systems.

In this work we used a coprecipitation method to synthesize Zn-Fe ferrite superparamagnetic nanoparticles (Zn_xFe_3-xO₄: $x =$ 0, 0.15, 0.25, 0.35, 0.50, 0.65, 0.75, 0.85, 1) to tune their Curie temperature.

The produced Zn_xFe_3-xO₄ nanoparticles present diameters below 15 nm and crystallite sizes ranging from 10 to 4 nm, depending close to linearly on the Zn relative content.

The Zn_xFe_3-xO₄ nanoparticles saturation magnetization is highly dependent on the Zn relative content, having a maximum around the Zn_0.25Fe_2.75O₄ composition.

Finally, we propose an optimized composition range of these Zn-Fe ferrite superparamagnetic nanoparticles for near room temperature self-regulated heating napplications.

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Zn-Fe 铁氧体超顺磁性纳米粒子的居里温度控制

在这项工作中，我们采用共沉淀法合成了锌铁氧体超顺磁性纳米粒子（ZnxFe3-xO4：x= 0、0.15、0.25、0.35、0.50、0.65、0.75、0.85、1），以调节其居里温度。制得的 ZnxFe3-xO4 纳米粒子直径小于 15 纳米，晶粒大小在 10 至 4 纳米之间，与锌的相对含量成近似线性关系。ZnxFe3-xO4 纳米粒子的饱和磁化与锌的相对含量有很大关系，在 Zn0.25Fe2.75O4 纳米粒子附近达到最大值。最后，我们提出了这些 Zn-Fe 铁氧体超顺磁性纳米粒子在近室温自调节加热应用中的优化组成范围。

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

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.