Band
Title
225.0 cm-1: νT (A1g) of (CO3)2- in K2Ca(CO3)2 - phase alpha
Type
Raman scattering
Assignments summary
Assignment Symmetry Mode Specie(s) Molecule/Atom Bond Multiplicity Degeneracy Contribution Resonance
νT (A1g) A1g translation (CO3)2- no
Characteristics summary
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)
225 ± 1 - - symmetric 0.095 m 295.0 1
Label
νT (A1g)
Symmetry
A1g
Category
phonon mode

Evaluation

Level
fully assigned
Evaluation
undefined
Comments
assignment from WURM database
# Multiplicity type Degeneracy Other band
1 no

Phonon modes

Label (type)
νT (translation)
Comments
out-of-phase and out-of-plane and out-of phase translation of CO32-
Composition
pure alpha-K2Ca(CO3)2, formed at 3GPa/975°C
Texture
crystal

Temperature

Temperature
295.0 ± 5.0 K

Pressure

Pressure
1 bar
Laser wavelength
532.0 nm
Sample orientation mode
unoriented
Method #1
spectrum measurement
Overlap
slightly blended
Peak
225 ± 1 cm-1 (peak)
Evaluation
validated
Quality
B
Shape
symmetric
Evaluation
validated
Quality
undefined
Method
peak intensity
Relative intensity
0.095 ± 0.015
Strength
medium (m)
Evaluation
undefined
Quality
D