CoFe2O4@Bi2/3Cu3Ti4O12@Graphene复合材料的光学特性及高频（k波段）微波吸收性能

IF 5.1 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Ceramics International Pub Date : 2025-05-01 DOI:10.1016/j.ceramint.2025.01.582

A. Magaji , M.D. Nurhafizah , D. Basandrai

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引用次数: 0

摘要

由于电子技术的进步，电磁污染呈上升趋势。这种类型的污染会影响电子设备的操作，并可能导致与辐射有关的疾病。采用溶胶-凝胶自燃烧法制备CoFe2O4和Bi2/3Cu3Ti4O12，采用机械共混法制备CoFe2O4@Bi2/3Cu3Ti4O12@graphene复合材料。XRD分析证实了制备样品的纯度，FTIR分析证实了制备样品的纯度。Bi2/3Cu3Ti4O12和石墨烯的存在导致磁相互作用的减少，这一点得到了VSM分析和μ′和μ″图的支持。CoFe2O4@Bi2/3Cu3Ti4O12@graphene复合材料的Eg值最低，为3.76 eV。随着Bi2/3Cu3Ti4O12和石墨烯的加入，CoFe2O4的磁性参数有降低的趋势。在吸波厚度为2.00 mm、有效吸收带宽为3.00、频率为21.59 dB时，CoFe2O4@Bi2/3Cu3Ti4O12@graphene复合材料样品的RL最小值为- 25.73 dB。结果表明CoFe2O4@Bi2/3Cu3Ti4O12@graphene复合材料作为高效微波吸收材料的可行性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Optical properties and high-frequency (K-band) microwave absorption performance of CoFe2O4@Bi2/3Cu3Ti4O12@Graphene composite

查看原文本刊更多论文

Optical properties and high-frequency (K-band) microwave absorption performance of CoFe2O4@Bi2/3Cu3Ti4O12@Graphene composite

Electromagnetic pollution has been on the rise due to advancement in electronics. This type of pollution could affect the operation of electronic devices and may causes radiation related disease. The sol-gel auto-combustion method was used to prepare CoFe₂O₄ and Bi_2/3Cu₃Ti₄O₁₂ whereas mechanical blending was used to prepare CoFe₂O₄@Bi_2/3Cu₃Ti₄O₁₂@graphene composite. The XRD analysis affirm the purity of the prepared samples which was later confirmed by FTIR analysis. The presence of Bi_2/3Cu₃Ti₄O₁₂ and graphene resulted in the reduction of the magnetic interaction which is supported by VSM analysis and the plot of

μ^{'}

and

μ^{″}

. CoFe₂O₄@Bi_2/3Cu₃Ti₄O₁₂@graphene composite possesses the lowest value of

E_{g}

(3.76 eV). The magnetic parameters of CoFe₂O₄ tend to decrease with the addition of Bi_2/3Cu₃Ti₄O₁₂ and graphene. The sample CoFe₂O₄@Bi_2/3Cu₃Ti₄O₁₂@graphene composite shows the least

R L

-

25.73 dB for an absorber thickness of 2.00 mm at a frequency of 21.59 dB with 3.00 bandwidth of effective absorption. The results demonstrate the possibility of applying CoFe₂O₄@Bi_2/3Cu₃Ti₄O₁₂@graphene composite as an efficient microwave absorber.

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来源期刊

Ceramics International 工程技术-材料科学：硅酸盐

CiteScore

9.40

自引率

15.40%

发文量

4558

审稿时长

25 days

期刊介绍： Ceramics International covers the science of advanced ceramic materials. The journal encourages contributions that demonstrate how an understanding of the basic chemical and physical phenomena may direct materials design and stimulate ideas for new or improved processing techniques, in order to obtain materials with desired structural features and properties. Ceramics International covers oxide and non-oxide ceramics, functional glasses, glass ceramics, amorphous inorganic non-metallic materials (and their combinations with metal and organic materials), in the form of particulates, dense or porous bodies, thin/thick films and laminated, graded and composite structures. Process related topics such as ceramic-ceramic joints or joining ceramics with dissimilar materials, as well as surface finishing and conditioning are also covered. Besides traditional processing techniques, manufacturing routes of interest include innovative procedures benefiting from externally applied stresses, electromagnetic fields and energetic beams, as well as top-down and self-assembly nanotechnology approaches. In addition, the journal welcomes submissions on bio-inspired and bio-enabled materials designs, experimentally validated multi scale modelling and simulation for materials design, and the use of the most advanced chemical and physical characterization techniques of structure, properties and behaviour. Technologically relevant low-dimensional systems are a particular focus of Ceramics International. These include 0, 1 and 2-D nanomaterials (also covering CNTs, graphene and related materials, and diamond-like carbons), their nanocomposites, as well as nano-hybrids and hierarchical multifunctional nanostructures that might integrate molecular, biological and electronic components.