Study of the magnetic properties and shielding effectiveness of yttrium iron garnet elongated structures fabricated inside alumina membranes by a sol-gel method

IF 4.3 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Chemistry and Physics Pub Date : 2025-05-11 DOI:10.1016/j.matchemphys.2025.131004

P.H. Pessoa , L.K.S. Assis , J.E. Abrão , A.R. Santos , A.R. Rodrigues , E. Padrón-Hernández

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Abstract

This study investigates the magnetic properties of elongated YIG nanostructures fabricated via a sol-gel process combined with vacuum-assisted deposition into porous alumina membranes. Structural characterization by X-ray diffraction, scanning electron microscopy, and energy-dispersive X-ray spectroscopy confirmed successful nanopillar formation. Magnetic behavior was evaluated using ferromagnetic resonance (FMR) and vibrating sample magnetometry (VSM), revealing a remanence of 0.03 emu/g and a coercive field of 21 Oe, consistent with ferromagnetic behavior. FMR analysis indicated low magnetic anisotropy and a minimum linewidth at 40°, suggesting a hard magnetization axis at this angle. X-band magnetic shielding measurements yielded an average effectiveness of 0.55 dB. While modest, this result highlights the potential of YIG nanostructures in low-frequency shielding applications due to possible synergistic effects with the porous alumina matrix.

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溶胶-凝胶法制备氧化铝膜内钇铁石榴石细长结构的磁性和屏蔽性能研究

本研究研究了溶胶-凝胶结合真空辅助沉积法制备的细长YIG纳米结构在多孔氧化铝膜上的磁性能。通过x射线衍射、扫描电子显微镜和能量色散x射线光谱的结构表征证实了纳米柱的成功形成。利用铁磁共振（FMR）和振动样品磁强计（VSM）对其磁性行为进行了评估，发现剩余量为0.03 emu/g，矫顽力为21 Oe，与铁磁行为一致。FMR分析表明，磁各向异性较低，40°处线宽最小，表明该角度为硬磁化轴。x波段磁屏蔽测量的平均有效性为0.55 dB。虽然这一结果并不明显，但由于与多孔氧化铝基体可能产生的协同效应，这一结果突出了YIG纳米结构在低频屏蔽应用中的潜力。

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

Materials Chemistry and Physics 工程技术-材料科学：综合

CiteScore

8.70

自引率

4.30%

发文量

1515

审稿时长

69 days

期刊介绍： Materials Chemistry and Physics is devoted to short communications, full-length research papers and feature articles on interrelationships among structure, properties, processing and performance of materials. The Editors welcome manuscripts on thin films, surface and interface science, materials degradation and reliability, metallurgy, semiconductors and optoelectronic materials, fine ceramics, magnetics, superconductors, specialty polymers, nano-materials and composite materials.