We conducted a lab practical on Raman spectroscopy, specifically focusing on the spectrum of a Gold and Palladium mixture. I would like to ask why there are no clearly defined peaks observed, unlike in other spectra.
P.S. x-axis is Wavenumber and y-axis is Intensity.
There has been a long previous discussion, why pure metals usually not show a Raman spectrum.
https://www.researchgate.net/post/why_pure_metals_cannot_show_raman_bands/1
There are some points that apply to gold and palladium, I guess, as well.
Metals don’t have any Raman peaks because tensor polarizability is zero. There are no other reasons. It is not a question of symmetry or something else. Suppose someone shows the Raman spectrum of metal. In that case, it is usually the Raman spectrum of the oxide of this metal, some product of the reaction of a metal with components of the environment or contamination of the surface.
- Badges
- Science topic
- Similar topics
- Physical Sciences
- Materials Science
- Materials
- Carbon Materials
- Graphite
- Graphene