Abstract In the present work, chemically synthesized cadmium selenide (CdSe) nanocrystals, which have a cubic lattice structure as per X-ray diffraction (XRD) analysis, has been irradiated with 120 MeV Ni10+ swift heavy ions (SHI) for the study of their structural modification. A significant change in the lattice structure has been found with different ion fluence of 120 MeV Ni10+ irradiation, which may be due to the high electronic energy loss of SHI. AFM analysis also shows changes in morphological properties with ion irradiation. The evolution of lattice structure with different fluence has been studied using double ion impact model. Further, SHI induced cubic to hexagonal transformation effect the microstructural parameters such as intrinsic strain, dislocation density of CdSe nanocrystals. SHI induced microstructural modifications have also been studied with the help of Variance model.

中文翻译：

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120 MeV Ni10+ 快速重离子辐照 CdSe 纳米晶体诱导立方相到六方相转变 - 微观结构改性研究

摘要 在目前的工作中，化学合成的硒化镉 (CdSe) 纳米晶体，根据 X 射线衍射 (XRD) 分析具有立方晶格结构，已用 120 MeV Ni10+ 快速重离子 (SHI) 辐照以研究其结构修改。已发现在 120 MeV Ni10+ 辐照的不同离子注量下晶格结构发生显着变化，这可能是由于 SHI 的高电子能量损失。AFM 分析还显示了离子照射后形态特性的变化。使用双离子碰撞模型研究了不同注量下晶格结构的演变。此外，SHI 诱导立方体到六方体的转变影响微观结构参数，例如 CdSe 纳米晶体的固有应变、位错密度。