After laser irradiation of the diamond, a Raman characteristic peak at the position of 1424~1432 cm-1 appeared on the diamond surface. Is this an amorphous carbon structure?
The Raman characteristic peak in the range of 1424 to 1432 cm-1 can be associated with several materials. However, one common material that exhibits a Raman peak in this range is silicon, specifically silicon crystals in the diamond-cubic crystal structure.
The peak at 1430 cm-1 in the Raman spectrum of silicon is due to the first-order scattering of the transverse optical (TO) phonon mode, which involves a vibrational motion of the silicon atoms in the crystal lattice. This peak is also referred to as the TO peak or the peak at the Brillouin zone center.
It's worth noting that other materials such as diamond and germanium can also exhibit Raman peaks in this frequency range. However, the peak at 1430 cm-1 is a distinctive feature of silicon and can be used to identify the material in various applications, including materials science, semiconductor engineering, and nanotechnology.
Kaushik Shandilya Thank you. This is exactly what I am wondering. All the areas of the diamond were irradiated by laser showed the "Si" characteristic peaks, but the diamond was not in contact with a substance containing Si.
Nitesh Choudhary Hello, can you share some relevant references? Thank you very much.
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