Tailoring SrFe12O19 – MoS2 Composites For Enhanced Microwave Absorption Performance in X-band

IF 5.8 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Journal of Alloys and Compounds Pub Date : 2024-10-05 DOI:10.1016/j.jallcom.2024.176885

Aarushi Ahlawat, G.D Tyagi, Himangshu B. Baskey, Sachin Tyagi

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Abstract

The electromagnetic wave-absorbing composites, incorporating strontium hexaferrite and molybdenum disulfide (SrFe₁₂O₁₉-MoS₂), are synthesized by mixing in different weight ratios. In the present work, strontium hexaferrite (SrFe₁₂O₁₉) is developed through a low-temperature auto-combustion method while two-dimensional molybdenum disulfide (MoS₂) is synthesized by a facile hydrothermal process. The materials and their composites undergo analysis using characterization techniques such as X-ray diffraction (XRD), fourier transform infrared (FTIR) spectroscopy, field emission scanning electron microscopy (FESEM), and vibrating sample magnetometer (VSM) to assess their structural, morphological, and magnetic properties, respectively. The minimal reflection loss (RL_min) of – 47.35 dB is observed at 8.66 GHz for the SrFe₁₂O₁₉-MoS₂ (50%-50%) composite cast into pellets for microwave absorption analysis in the X-band frequency range. This RL_min is obtained with a sample thickness of 1.7 mm. An adequate bandwidth of 3.1 GHz, representing 77.5% of the entire X band, is observed for a loss below -10 dB. The synergistic interaction between magnetism and dielectricity makes it an efficient electromagnetic absorber for modern technologies.

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定制 SrFe12O19 - MoS2 复合材料以增强 X 波段的微波吸收性能

六价铁锶和二硫化钼（SrFe12O19-MoS2）以不同的重量比混合合成了电磁波吸收复合材料。在本研究中，六价铁锶（SrFe12O19）是通过低温自动燃烧法研制的，而二维二硫化钼（MoS2）则是通过简便的水热法合成的。利用 X 射线衍射 (XRD)、傅立叶变换红外光谱 (FTIR)、场发射扫描电子显微镜 (FESEM) 和振动样品磁力计 (VSM) 等表征技术对材料及其复合材料进行分析，分别评估其结构、形态和磁性能。在 8.66 GHz 频率下，SrFe12O19-MoS2（50%-50%）复合材料铸成的颗粒的最小反射损耗（RLmin）为 - 47.35 dB，用于 X 波段频率范围内的微波吸收分析。该 RLmin 是在样品厚度为 1.7 毫米时获得的。在损耗低于 -10 dB 的情况下，可以观察到 3.1 GHz 的足够带宽，占整个 X 波段的 77.5%。磁性和介电性之间的协同作用使其成为现代技术的高效电磁吸收体。

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来源期刊

Journal of Alloys and Compounds 工程技术-材料科学：综合

CiteScore

11.10

自引率

14.50%

发文量

5146

审稿时长

67 days

期刊介绍： The Journal of Alloys and Compounds is intended to serve as an international medium for the publication of work on solid materials comprising compounds as well as alloys. Its great strength lies in the diversity of discipline which it encompasses, drawing together results from materials science, solid-state chemistry and physics.