Abstract
Recently, it has been shown that CdTe has two sucessive phase transitions over a narrow pressure range at ≅3.5 GPa. In this work, the pressure cycle method using a Paris-Edinburgh cell up to 6 GPa has been applied to CdTe samples in order to obtain recovered CdTe nanocrystals which were characterized by high resolution transmission electron microscopy (HRTEM), electron diffraction and Raman scattering. Such retrieved nanocrystals are nearly spherical, with diameters ranging from 10 to 30 nm, and their structure is zinc-blende (ZB). Their Raman spectra is consistent with the CdTe phonon dispersion curves but reveal a phonon confinement effect.
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