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Published online by Cambridge University Press: 23 August 2012
The carbon onions have been treated in a shear diamond anvil cell under pressure up to 43 GPa and shear deformation up to 2000. The recovered samples have been investigated by the Transmission Electron Microscopy (TEM) and the UV and visible Raman spectroscopy. The carbon onions was stable at pressure up to 30 GPa and 400 shear. Bigger shear deformation at pressures exceeding 30 GPa leads to the amorphous carbon. At 43 GPa shear deformation leads to transformation of onions to DLC.