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Questions related from Rainer Thomas
Brillouin and Raman spectroscopy of the ferroelastic rutile-to-CaCl2 transition in SnO2 at high pressure: by Holger Hellwig, Alexander F. Goncharov, Eugene Gregoryanz, Ho-kwang Mao, and Russell J....
05 May 2024 507 1 View
Dear Colleagues, Have someone access to the Supplemental Material at http://link.aps.org/ supplemental/10.1103/PhysRevLett.120.265702 for Raman spectra and x-ray diffraction patterns at ambient...
12 April 2024 7,380 1 View
Fluorite has a clear Raman spectrum, with the dominant band at 320 cm-1. The REE-rich fluorite sample has a typical tveitite Raman spectrum, and the fluorite band is completely missing. However,...
17 January 2024 917 2 View
Most references to this question are not freely accessible.
01 November 2023 2,241 2 View
In a paper (Camacho-Lopez et al. 2013), I found the following sentence: “To our knowledge, the Raman spectrum for SnO2 in its orthorhombic phase has not been reported yet.”
10 April 2023 785 1 View
Fcc/bcc metals do not show Raman spectra. However, I have studied pure gold with Raman (532 nm laser, 30 mW on sample) and found a strong and asymmetric band at 76.0 ± 1.1 cm-1. Natural gold shows...
26 August 2022 9,284 3 View
Question to blue and red shift during Raman spectroscopy of coesite: For me, the significant blue shift of the coesite Raman lines is a mystery, and I cannot find a simple answer on the net....
13 February 2022 1,147 8 View
During a natural coesite crystal study, I observed a remarkable strong Raman band in the low-frequency range at 339.4 cm-1 between the 326 and 355 cm-1 band positions. The spontaneous...
26 May 2021 5,333 7 View
Dear colleagues,During my Raman work on very carbonate-rich fluid inclusions in quartz (15.8 equivalent % Na2CO3) I found beside the carbonate band at 1380 cm-1 a strong band at 1352 cm-1. The...
17 December 2015 2,077 10 View
In prismatine granulite from Waldheim/Saxony, I found a perovskite crystal with corroded nanodiamonds. Has anyone had an explanation for this unusual paragenesis?
01 January 1970 9,074 1 View
Often, we see in the scientific Raman contributions the unfortunate option of using arbitrary units (a.u.) for the intensity on the Raman diagram ordinate. Arbitrary units mean at least total...
01 January 1970 7,645 14 View
Question: Cassiterite is tetragonal and orthorhombic. Now, I have found a different cassiterite with maybe monoclinic crystal symmetry. The poster by Drivenes et al. (2018) shows no Raman data....
01 January 1970 5,069 3 View
The Raman spectrum of MoS2 in corundum of the Waldheim prismatine granulite shows in the high-frequency region, unusual Raman bands. Is there an explanation?
01 January 1970 2,532 7 View
There is, for me, a more significant problem with the spherical crystals in a granulite facies rock (prismatine rock from Waldheim). Spherical crystals in larger spherical crystals and bulk rock...
01 January 1970 6,361 3 View
Question: Is there any simple and straightforward difference between natural and synthetic SiC (moissanite)? I found some plane and spherical SiC crystals in the oligoclase of an HP metamorphic rock.
01 January 1970 9,581 2 View
