作为法拉第笼的渗透网络激活铋铁氧体纳米复合材料

IF 2.9 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materialia Pub Date : 2025-07-23 DOI:10.1016/j.mtla.2025.102496

Sanjeev Patil , Abishek Kumar , Parasuraman Swaminathan

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引用次数: 0

摘要

一种能够吸收电磁干扰（EMI）的屏蔽材料对于最小化存在于电流反射基材料中的交叉电子干扰至关重要。铋铁氧体（BFO）具有铁电性质，为低频极化提供偶极子。银纳米线（Ag NWs）的渗透网络通过内部反射为移动电荷提供额外的屏蔽贡献，BFO-Ag异质结进一步增强了这种屏蔽作用。因此，BFO的介电损耗和Ag NWs的高导电性相结合，在X波段频率范围内（8 - 12 GHz）实现了高EMI衰减。这种协同作用使BFO- ag复合材料与25% Ag-7 5% BFO成分（wt.%）在柔性PET基板上的屏蔽效率达到38 dB（99.98%）。这项工作为bfo启发的金属氧化物纳米复合材料在共形整流天线（整流天线）和防静电器件中的应用奠定了基础。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Percolation network-enabled bismuth ferrite nanocomposites as a Faraday cage

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Percolation network-enabled bismuth ferrite nanocomposites as a Faraday cage

An absorption capable electromagnetic interference (EMI) shielding material is critical to minimize the cross-electronics interference that exists with current reflection-based materials. Bismuth ferrite (BFO), with its ferroelectric nature, provides dipoles for low frequency polarization. Silver nanowires (Ag NWs) enabled percolation network lends mobile charges for additional shielding contribution via internal reflection, which is further enhanced by the BFO-Ag heterojunctions. Thus, the dielectric losses from BFO and the high electrical conductivity of Ag NWs combine to achieve high EMI attenuation in the X band frequency range (8 – 12 GHz). This synergy enables a 38 dB (99.98%) shielding efficiency with the BFO-Ag composite with a 25 %Ag–7 5% BFO composition (wt.%) on the flexible PET substrate. This work lays the foundation for BFO-inspired metal-oxide nanocomposites towards conformal rectifying antenna (rectenna) and anti-static device applications.

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来源期刊

Materialia MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

6.40

自引率

2.90%

发文量

345

审稿时长

36 days

期刊介绍： Materialia is a multidisciplinary journal of materials science and engineering that publishes original peer-reviewed research articles. Articles in Materialia advance the understanding of the relationship between processing, structure, property, and function of materials. Materialia publishes full-length research articles, review articles, and letters (short communications). In addition to receiving direct submissions, Materialia also accepts transfers from Acta Materialia, Inc. partner journals. Materialia offers authors the choice to publish on an open access model (with author fee), or on a subscription model (with no author fee).