Abstract
Nanometer dimension copper clusters are introduced into the soda-lime glass matrix by ion-exchange method. The exchanged glasses show an increase in index of refraction thus forming themselves optical waveguides. Optical absorption spectroscopic analysis showed signature of copper clusters in the ion-exchanged glass. Theoretical optical absorption spectrum was calculated using the Mie's theory, and it is confirmed that copper clusters of a few nanometers are formed inside the dielectric matrix during ion-exchange itself. Irradiation of the ion-exchanged samples at different doses with He + ions of energy 100 keV showed variation in the cluster size with the broadening of the absorption band. The Glancing Incidence X-ray Diffraction (GIXRD) study disclosed the chemical state and nanocrystalline phase of copper inside the glass matrix.
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