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Grazing-incidence x-ray diffraction patterns (background subtracted) of the Co implanted samples before and after thermal annealing at .
Enhancement of intensity of the surface acoustic symmetrical vibrational modes confined to the Co nanoclusters is shown as a function of the excitation wavelengths. Spectra are offset for clarity.
Polarization dependence of low-frequency Raman spectra of Co nanoclusters embedded in the silica glass matrix.
Display of polarized Raman spectra of embedded Co nanoclusters in the silica glass matrix. The symbols are the data; solid line is the fit to the experimental data with Lorentzian line shape function and the background.
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