- Type
- absorption
- Assignments summary
- Characteristics summary
| Assignment | Symmetry | Mode | Specie(s) | Molecule/Atom | Bond | Multiplicity | Degeneracy | Contribution | Resonance |
|---|---|---|---|---|---|---|---|---|---|
| nuT (Eu) | Eu | translation |
Fe3+ O2- |
unknown | full | ||||
| nuT (A2u) | A2u | translation |
Fe3+ O2- |
unknown | full |
| 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) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 555 ± 20 | - | 90 ± 30 | asymmetric | 2 ± 0.5 | 22660 ± 100 | 1 | vvs | 2.0e+06 ± 7.0e+05 | vvs | 298.0 | 1 |
- Label
- nuT (Eu)
- Symmetry
- Eu
- Category
- phonon mode
Evaluation
- Level
- fully assigned
- Evaluation
- validated
- Contribution level
- full
| # | Multiplicity type | Degeneracy | Other band |
|---|---|---|---|
| 1 | unknown |
- Label (type)
- νT (translation)
Phonon modes
- Label
- nuT (A2u)
- Symmetry
- A2u
- Category
- phonon mode
Evaluation
- Level
- fully assigned
- Evaluation
- validated
- Contribution level
- full
| # | Multiplicity type | Degeneracy | Other band |
|---|---|---|---|
| 1 | unknown |
- Label (type)
- νT (translation)
Phonon modes
- Temperature
- 298.0 ± 1.0 K
Temperature
- Pressure
- 1 bar
Pressure
- Method #1
- data compilation
- Fit function
- Lorentzian
- Overlap
- moderately blended
- Peak
- 555 ± 20 cm-1 (peak)
- Evaluation
- validated
- Quality
- E
- Comments
- Band is centered near 530 cm-1 for protohematite, and near 545 for well-crystalized hematite. Highly sensitive to optical effects. Position shifts from high to low frequencies with reduction of grain size. Associated with a band near 630 cm-1 in protohematite and hydrohematite. See Chernyshova et al. (2007) for a review
- FWHM
- 90 ± 30 cm-1 (extrapolated)
- Shape
- asymmetric
- Asymmetry factor
- 2 ± 0.5
- Evaluation
- validated
- Quality
- E
- Method
- baseline corrected peak intensity
- Absorption coefficient
- 22660 ± 100 cm-1
- Relative intensity
- 1
- Strength
- very very strong (vvs)
- Evaluation
- validated
- Quality
- A
- Method
- width x peak intensity
- Absorption coefficient
- 2000000 ± 700000 cm-2
- Strength
- very very strong (vvs)
- Evaluation
- validated
- Quality
- E