A comprehensive analysis: The effects of 100 MeV Ni7+ ion irradiations on the structural integrity of MoO3 thin films

IF 1.4 3区物理与天体物理 Q3 INSTRUMENTS & INSTRUMENTATION

Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms Pub Date : 2024-07-14 DOI:10.1016/j.nimb.2024.165465

Amit Kumar Verma , Peramjeet Singh , Neetu Yadav , Vernica Verma , Chandra Prakash , Sunil ojha , V.V. Siva Kumar , S.K. Kedia , Fouran Singh , Gargi Dhiman , R. Brajpuriya , N.K. Pandey , Brijesh Kumar , Ambesh Dixit

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Abstract

An effort has been made to comprehensively study the structural modification of the molybdenum trioxide (MoO₃) thin film with 100 MeV, Ni⁷⁺. The MoO₃ nanoparticles were synthesized by hydrothermal method and thin film of MoO₃ was fabricated by spin coating technique. MoO₃ thin film was subjected to irradiation with 100 MeV, Ni⁷⁺ beam with various fluences of 5 × 10¹², 1 × 10¹³, and 3 × 10¹³ ions cm⁻². The structural changes induced by ion beam irradiation were characterized using XRD diffraction, Raman, Fourier Transforms Infrared Spectroscopy (FTIR) UV–visible spectroscopy, and Atomic Force Microscopy (AFM). The synthesized thin film showed an orthorhombic phase and the average crystallite size was 63.8 nm of the pristine sample. it is observed that the crystallinity decreases after irradiation. The Raman study confirmed the XRD findings and also showed that after exposure, intensity of the Raman peaks decreased and the width of the spectra expanded due to a decrement in the crystallinity. The bandgap of the thin films decreased after irradiation as the ion fluence increased up to 3 × 10¹³ ions cm⁻². The findings showed that the ion beam irradiation was directly accountable for the amorphization and lattice defect development in the MoO₃ thin films.

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综合分析：100 MeV Ni7+ 离子辐照对 MoO3 薄膜结构完整性的影响

我们努力全面研究 100 MeV Ni7+ 对三氧化钼（MoO3）薄膜的结构改性。研究人员采用水热法合成了三氧化钼纳米粒子，并利用旋涂技术制作了三氧化钼薄膜。MoO3 薄膜受到 100 MeV Ni7+ 离子束的辐照，离子束的通量分别为 5 × 1012、1 × 1013 和 3 × 1013 cm-2。使用 XRD 衍射、拉曼、傅立叶变换红外光谱（FTIR）、紫外-可见光谱和原子力显微镜（AFM）对离子束辐照引起的结构变化进行了表征。合成的薄膜呈正交相，原始样品的平均结晶粒度为 63.8 nm。拉曼研究证实了 XRD 的结论，同时还表明，由于结晶度降低，照射后拉曼峰强度降低，光谱宽度扩大。随着离子通量增加到 3 × 1013 离子 cm-2，辐照后薄膜的带隙减小。研究结果表明，离子束辐照直接导致了 MoO3 薄膜的非晶化和晶格缺陷发展。

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

Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms 物理-核科学技术

CiteScore

2.80

自引率

7.70%

发文量

231

审稿时长

1.9 months

期刊介绍： Section B of Nuclear Instruments and Methods in Physics Research covers all aspects of the interaction of energetic beams with atoms, molecules and aggregate forms of matter. This includes ion beam analysis and ion beam modification of materials as well as basic data of importance for these studies. Topics of general interest include: atomic collisions in solids, particle channelling, all aspects of collision cascades, the modification of materials by energetic beams, ion implantation, irradiation - induced changes in materials, the physics and chemistry of beam interactions and the analysis of materials by all forms of energetic radiation. Modification by ion, laser and electron beams for the study of electronic materials, metals, ceramics, insulators, polymers and other important and new materials systems are included. Related studies, such as the application of ion beam analysis to biological, archaeological and geological samples as well as applications to solve problems in planetary science are also welcome. Energetic beams of interest include atomic and molecular ions, neutrons, positrons and muons, plasmas directed at surfaces, electron and photon beams, including laser treated surfaces and studies of solids by photon radiation from rotating anodes, synchrotrons, etc. In addition, the interaction between various forms of radiation and radiation-induced deposition processes are relevant.