Abstract
Swift Heavy ion (SHI) irradiation is a powerful technique for the modification of various properties of a material. Here, CdS nanocrystals have been prepared by a chemical method and subsequently irradiated by 120 MeV Ni10+ heavy ions at IUAC, New Delhi. X-ray diffraction (XRD) analysis has been performed to study the change in structural properties before and after the irradiation. Rietveld refinement confirms the transformation of CdS nanocrystals from cubic to hexagonal phase after SHI irradiation. Further, the output information of the Rietveld refinement has been used in the Quantum espresso code as an input parameter to study the change in the elastic constants due to the SHI irradiation by first principles method. Now, using those elastic constant values, microstructural parameters of CdS nanocrystals has been obtained from the XRD peak broadening of the pristine and SHI irradiated samples.
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