Enhanced Magneto-Optical Kerr Effect-Based Multilayers/Pd for Hydrogen Magnetoplasmonic Transducers

IF 4.3 4区物理与天体物理 Q2 CHEMISTRY, PHYSICAL

Plasmonics Pub Date : 2025-01-15 DOI:10.1007/s11468-024-02648-z

Ali Abdulkhaleq Alwahib, Sura H. Al-rekabi

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引用次数: 0

Abstract

We studied magneto-optical surface plasmon resonance (MOSPR) theoretically and experimentally to design a hydrogen gas sensor. A prism-based MOSPR design was used to test the sensor’s reflectance and perform related measurements. Results showed that the ferromagnetic materials Co, Fe, and Ni can improve the sensor’s gas-sensing performance. In addition, the MOSPR of Au or Ag base-ferromagnetic material coated with 1, 2, or 3 nm-thick Pd layers was studied in air and hydrogen environments. A thick Pd layer increases response time in contrast to a thin Pd layer. Moreover, ferromagnetic materials considerably affect theta shift hydrogen sensing, reaching a maximum Kerr effect of > 1.5. Among ferromagnetic materials, Fe exhibits the best performance. Its reflectance at air and hydrogen resonance angles are 0.013089 and 0.0083943, respectively. The maximum angle shift between hydrogen gas and Fe ferromagnetic materials’ air is 0.294° when the Pd layer is 3 nm thick. This finding suggests that the sensitivity of a hydrogen gas sensor can be improved by defining the theta shift based on a specific ferromagnetic material and Pd thickness.

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基于增强磁光克尔效应的多层/Pd氢磁等离子换能器

对磁光表面等离子体共振（MOSPR）进行了理论和实验研究，设计了一种氢气传感器。基于棱镜的MOSPR设计用于测试传感器的反射率并进行相关测量。结果表明，Co、Fe和Ni等铁磁材料可以提高传感器的气敏性能。此外，研究了在空气和氢气环境下，包覆1,2,3 nm厚Pd层的Au或Ag基铁磁材料的MOSPR。与薄Pd层相比，厚Pd层增加了响应时间。此外，铁磁材料显著影响θ移氢传感，最大Kerr效应为>； 1.5。在铁磁材料中，铁表现出最好的性能。其在空气共振角和氢共振角的反射率分别为0.013089和0.0083943。当Pd层厚度为3 nm时，氢气与Fe铁磁材料空气之间的最大角度位移为0.294°。这一发现表明，通过定义基于特定铁磁材料和Pd厚度的theta位移，可以提高氢气传感器的灵敏度。

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来源期刊

Plasmonics 工程技术-材料科学：综合

CiteScore

5.90

自引率

6.70%

发文量

164

审稿时长

2.1 months

期刊介绍： Plasmonics is an international forum for the publication of peer-reviewed leading-edge original articles that both advance and report our knowledge base and practice of the interactions of free-metal electrons, Plasmons. Topics covered include notable advances in the theory, Physics, and applications of surface plasmons in metals, to the rapidly emerging areas of nanotechnology, biophotonics, sensing, biochemistry and medicine. Topics, including the theory, synthesis and optical properties of noble metal nanostructures, patterned surfaces or materials, continuous or grated surfaces, devices, or wires for their multifarious applications are particularly welcome. Typical applications might include but are not limited to, surface enhanced spectroscopic properties, such as Raman scattering or fluorescence, as well developments in techniques such as surface plasmon resonance and near-field scanning optical microscopy.