Magnetostatic surface-wave–driven giant electromagnetic power enhancement in multiferroic BiFeO3 ceramics

IF 3.674 4区工程技术 Q1 Engineering

Applied Nanoscience Pub Date : 2026-04-29 DOI:10.1007/s13204-026-03164-8

Adrielson Dias, Thiago Ferro, Monalisa Cavalcante, José Laurentino, Francisco Estrada, José Holanda

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引用次数: 0

Abstract

We report an experimental and theoretical investigation of the propagation of radio-frequency electromagnetic pulses (0.1–50 MHz) along the surface of multiferroic BiFeO₃ (BFO) ceramics subjected to oscillating magnetic fields. A pronounced enhancement of the transmitted electromagnetic power is observed, strongly dependent on the magnetic-field configuration, excitation frequency, and propagation geometry. A maximum amplification of approximately 240% is achieved when the RF pulse propagates perpendicular to both the static and oscillating magnetic fields. The phenomenon is interpreted in terms of magnetostatic surface modes described within the Damon–Eshbach theoretical framework. Dispersion simulations and experimental measurements show strong quantitative agreement, with high fitting coefficients and minimal deviations in peak-field positions, demonstrating that the amplification originates from field-driven excitation of magnetostatic surface modes associated with uncompensated surface spins. These findings establish a robust mechanism for magnetically tunable electromagnetic amplification in multiferroic ceramics and highlight the technological potential of BiFeO₃ for advanced sensing and RF power modulation applications.

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多铁BiFeO3陶瓷中静磁表面波驱动的巨电磁功率增强

本文报道了在振荡磁场作用下，射频电磁脉冲（0.1-50 MHz）沿多铁BiFeO3 （BFO）陶瓷表面传播的实验和理论研究。透射电磁功率的显著增强被观察到，强烈依赖于磁场结构，激励频率和传播几何形状。当射频脉冲垂直于静态和振荡磁场传播时，最大放大约为240%。这种现象是根据Damon-Eshbach理论框架中描述的静磁表面模式来解释的。色散模拟和实验测量结果显示了很强的定量一致性，具有较高的拟合系数和最小的峰场位置偏差，表明放大来自与未补偿表面自旋相关的静磁表面模式的场驱动激励。这些发现为多铁陶瓷中的磁可调谐电磁放大建立了强大的机制，并突出了BiFeO3在先进传感和射频功率调制应用中的技术潜力。

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

Applied Nanoscience Materials Science-Materials Science (miscellaneous)

CiteScore

7.10

自引率

0.00%

发文量

430

期刊介绍： Applied Nanoscience is a hybrid journal that publishes original articles about state of the art nanoscience and the application of emerging nanotechnologies to areas fundamental to building technologically advanced and sustainable civilization, including areas as diverse as water science, advanced materials, energy, electronics, environmental science and medicine. The journal accepts original and review articles as well as book reviews for publication. All the manuscripts are single-blind peer-reviewed for scientific quality and acceptance.