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Raman spectra of sample obtained upon heating (circles) and cooling (dashed lines). The solid lines are calculated spectra using PCM model.
X-ray diffraction patterns of the sample in the temperature range of .
Variation of the mode frequency (∎) and linewidth (●) upon heating (a) and upon gradual cooling (b). Full lines represent calculated values for the peak position and linewidth. The best fitting parameters during the heating are , , , , , and , whereas those for cooling are , , , , , and . Triangles represent the calculated mode position including only size and strain effects.
Defect concentration for the temperature range of as a function of the grain size. Inset: the particle size, obtained from the PCM model, as a function of temperature.
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