Matrix-material dependence on the elongation of embedded gold nanoparticles induced by 4 MeV C60 and 200 MeV Xe ion irradiation
Matrix-material dependence on the elongation of embedded gold nanoparticles induced by 4 MeV C60 and 200 MeV Xe ion irradiation
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DOI：
10.1088/1361-6528/ab7e70
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发表时间：
2020-03
期刊：
影响因子：
3.5
通讯作者：
R. Li;K. Narumi;A. Chiba;Y. Hirano;D. Tsuya;S. Yamamoto;Y. Saitoh;N. Okubo;N. Ishikawa;C. Pang;F. Chen;H. Amekura
中科院分区：
文献类型：
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作者：
R. Li;K. Narumi;A. Chiba;Y. Hirano;D. Tsuya;S. Yamamoto;Y. Saitoh;N. Okubo;N. Ishikawa;C. Pang;F. Chen;H. Amekura
报道了在4 MeV C60+团簇离子和200 MeV Xe14+离子辐照下，在非晶态碳(a-C)、晶态铟锡氧化物(InxSn1-xOz；ITO)和晶态氟化钙(CaF2)三种不同基质中嵌入的Au纳米颗粒的伸长率。在4 MeV C60团簇辐照下，当注量为5×10~(13)离子cm~(-2)时，CaF_2层发生强烈的溅射，整个CaF_2层完全消失。在SiO_2层中观察到部分Au纳米粒子，可能是由于反冲注入所致。非晶碳(a-C)层在4 MeV C60辐照下仍表现出较低的溅射损耗。但a-C层的延伸率较低。在4 MeV C60辐照下，ITO层厚度有一定程度的减薄，而在4 MeV C60和200 MeV Xe辐照下，Au纳米粒子都有较大的延伸率。即使在诱导较大的伸长后，ITO层仍保持了结晶度。这是关于金属纳米颗粒在晶体基质中伸长的第一个报告。
We report the elongation of embedded Au nanoparticles (NPs) in three different matrices, i.e. amorphous carbon (a-C), crystalline indium tin oxide (InxSn1-xOz; ITO) and crystalline calcium fluoride (CaF2), under irradiations of 4 MeV C60+ cluster ions and 200 MeV Xe14+ ions. Under 4 MeV C60 cluster irradiation, strong sputtering is induced in CaF2 layer so that the whole the layer was completely lost at a fluence of 5 × 1013 ions cm−2. Au NPs were partly observed in the SiO2, probably due to the recoil implantation. Amorphous carbon (a-C) layer exhibits low sputtering loss even under 4 MeV C60 irradiation. However, the elongation in a-C layer was low. While the ITO layer showed a certain decrease in thickness under 4 MeV C60 irradiation, large elongation of Au NPs was observed under both 4 MeV C60 and 200 MeV Xe irradiation. The ITO layer preserved the crystallinity even after large elongation was induced. This is the first report of the elongation of metal NPs in a crystalline matrix.