Fabrication and characterization of BFO/BTO/TiO2 hybrid nanocomposites as an EMI shielding material in X-band for commercial applications

IF 3.9 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY Materials Science and Engineering B-advanced Functional Solid-state Materials Pub Date : 2024-11-11 DOI:10.1016/j.mseb.2024.117805

P. Harshapriya , Pawandeep Kaur , Deepak Basandrai

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Abstract

The mechanical blending method was applied to generate BiFeO₃/Bi₄Ti₃O₁₂/TiO₂, Bi_0.8La_0.₂Fe_0.8Ag_0.2O₃/Bi_3.8La_0.2Ti_2.8Ag_0.2O₁₂/TiO₂, and Bi_0.Ya_0.2Fe_0.8Ag_0.2O₃/Bi_3.8Y_0.2Ti_2.8Ag_0.2O₁₂/TiO₂.The structural investigation shows that titanate microparticles and bismuth ferrite nanoparticles were successfully absorbed into the titanium dioxide matrix, and the purity is evaluated by XRD and EDAX analysis. When a dopant is added, the particle size and crystallite size decrease, promoting the produced composites’ energy band gap. The magnetic property shows that when a dopant is added, the magnetic saturation (M_s) and remnant magnetization (M_r) increase. The coercivity (H_C) of BBTL increases as compared to BBT, and the H_c of BBTY decreases dramatically. At 8.5 GHz, sample BBTL has a maximum reflection loss of −25.8 dB due to its matching thickness of 2.1 mm. Also, BBTY has a maximum total shielding effectiveness (SE_T) of 24.15 dB at 11.39 GHz, with a matching 1.8 mm thickness, making it ideal for EMI shielding material.

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作为 X 波段电磁干扰屏蔽材料的 BFO/BTO/TiO2 混合纳米复合材料的制备与表征，用于商业应用

应用机械混合法生成了BiFeO3/Bi4Ti3O12/TiO2、Bi0.8La0.2Fe0.8Ag0.2O3/Bi3.8La0.2Ti2.8Ag0.2O12/TiO2和Bi0.Ya0.2Fe0.8Ag0.2O3/Bi3.8Y0.2Ti2.8Ag0.2O12/TiO2。结构研究表明，钛酸盐微粒和铋铁氧体纳米微粒成功地被二氧化钛基质吸收，并通过 XRD 和 EDAX 分析评估了纯度。加入掺杂剂后，颗粒尺寸和晶粒尺寸减小，从而提高了所制复合材料的能带隙。磁性能表明，添加掺杂剂后，磁饱和度（Ms）和剩磁（Mr）都会增加。与 BBT 相比，BBTL 的矫顽力（HC）增加，而 BBTY 的 Hc 则急剧下降。在 8.5 GHz 频率下，样品 BBTL 的最大反射损耗为 -25.8 dB，这是因为其匹配厚度为 2.1 mm。此外，在 11.39 GHz 频率下，BBTY 的最大总屏蔽效能 (SET) 为 24.15 dB，匹配厚度为 1.8 mm，是理想的 EMI 屏蔽材料。

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来源期刊

Materials Science and Engineering B-advanced Functional Solid-state Materials 工程技术-材料科学：综合

CiteScore

5.60

自引率

2.80%

发文量

481

审稿时长

3.5 months

期刊介绍： The journal provides an international medium for the publication of theoretical and experimental studies and reviews related to the electronic, electrochemical, ionic, magnetic, optical, and biosensing properties of solid state materials in bulk, thin film and particulate forms. Papers dealing with synthesis, processing, characterization, structure, physical properties and computational aspects of nano-crystalline, crystalline, amorphous and glassy forms of ceramics, semiconductors, layered insertion compounds, low-dimensional compounds and systems, fast-ion conductors, polymers and dielectrics are viewed as suitable for publication. Articles focused on nano-structured aspects of these advanced solid-state materials will also be considered suitable.