Theoretical investigation of the sensing capabilities of intrinsic and Fe-modified net-Y on SF $$_6$$ 6 decomposition products

Shun-Yu Wang, Zhi-Gang Shao (), Cang-Long Wang and Lei Yang
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Shun-Yu Wang: South China Normal University
Zhi-Gang Shao: South China Normal University
Cang-Long Wang: Chinese Academy of Sciences
Lei Yang: Chinese Academy of Sciences

The European Physical Journal B: Condensed Matter and Complex Systems, 2024, vol. 97, issue 7, 1-12

Abstract: Abstract Detection of SF $$_6$$ 6 decomposition gases is crucial in power equipment maintenance. This paper investigates the adsorption behavior of SO $$_2$$ 2 and H $$_2$$ 2 S on the intrinsic and Fe-modified net-Y surfaces using density functional theory. The adsorption parameters and electronic attributes of diverse configurations have been scrutinized. Calculations indicate that net-Y exhibits limited adsorption capacity for both gases. The doped substrate exhibits a localized magnetic moment around the Fe atom, indicating the possible occurrence of the Kondo effect in the system. The substrate chemisorbs with the target gas through the Fe 3d orbitals. Additionally, after the adsorption of gases, the system undergoes a transition from metallic to semiconductor properties, accompanied by a near-complete disappearance of magnetism. Specifically, in two adsorption configurations, the systems manifest the characteristics of half-semiconductor and half-metal, respectively. Our study provides evidence that the incorporation of Fe-modified net-Y shows potential as a disposable device for detecting and purifying the decomposition products of SF $$_6$$ 6 , presenting a prospective application for net-Y in spintronic devices. Graphical abstract

Date: 2024
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DOI: 10.1140/epjb/s10051-024-00755-8

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