- Type
- Raman scattering
- Assignments summary
- Characteristics summary
| Assignment | Symmetry | Mode | Specie(s) | Molecule/Atom | Bond | Multiplicity | Degeneracy | Contribution | Resonance |
|---|---|---|---|---|---|---|---|---|---|
| Fe2+-O⁻ excitation | ligand-to-metal charge-transfer |
Fe2+ O⁻ |
no |
| Peak position (cm-1) |
Center position (cm-1) |
Width (cm-1) |
Shape | Asymmetry factor | Peak intensity (cm-1) |
Peak intensity relative | Peak strength | Integrated intensity (cm-2) |
Integrated intensity relative | Integrated strength | Temperature (K) |
Pressure (bar) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 508 ± 3 | - | 63 ± 6 | symmetric | 0.0075 | vw | 0.038 | w | 295.0 | 1 |
- Label
- Fe2+-O⁻ excitation
- Category
- electronic transition
Evaluation
- Level
- uncertain assignment
- Evaluation
- undefined
- Comments
- also attributed to Fe2+ excitation
| # | Multiplicity type | Degeneracy | Other band |
|---|---|---|---|
| 1 | no |
- Label (type)
- TBD (ligand-to-metal charge-transfer)
Electronic modes
- Composition
- 5%
- Texture
- crystal in plot
- Temperature
- 295.0 ± 5.0 K
Temperature
- Pressure
- 1 bar
Pressure
- Laser wavelength
- 532.0 nm
- Sample orientation mode
- unoriented
- Method #1
- various
- Overlap
- isolated
- Peak
- 508 ± 3 cm-1 (fit peak)
- Evaluation
- validated
- Quality
- C
- Comments
- possibly slightly increases with Fe fraction
- FWHM
- 63 ± 6 cm-1 (fwhm)
- Shape
- symmetric
- Evaluation
- validated
- Quality
- E
- Comments
- increases with Mg fraction
- Method
- baseline corrected peak intensity
- Relative intensity
- 0.0075 ± 0.0035
- Strength
- very weak (vw)
- Evaluation
- validated
- Quality
- E
- Comments
- maybe slight decrease with increasing Fe content, but very dispersed values
- Method
- width x peak intensity
- Relative intensity
- 0.038 ± 0.016
- Strength
- weak (w)
- Evaluation
- recommended
- Quality
- E
- Comments
- decreases with Mg fraction
- Publication
- SSHADE spectra
-
- Schmitt, Bernard; Montagnac, Gilles (2023): MIR-FIR normalized Raman spectrum (532 nm) of Fe-Magnesite (Ojos Negros, Spain) - grain M2-G9 - Mg# = 52.4%. Version 1. SSHADE/DRIMS (OSUG Data Center). Dataset/Spectral Data.
- Schmitt, Bernard; Montagnac, Gilles (2023): MIR-FIR normalized Raman spectrum (532 nm) of Fe-Magnesite - grain M2-H4 - Mg# = 69.2%. Version 1. SSHADE/DRIMS (OSUG Data Center). Dataset/Spectral Data.
- Schmitt, Bernard; Montagnac, Gilles (2025): MIR-FIR normalized Raman spectrum (532 nm) of Fe-Magnesite (Pfitsch Valley, Italy) - grain M4-G3 - Mg# = 82.8%. Version 1. SSHADE/DRIMS (OSUG Data Center). Dataset/Spectral Data.
- External spectra