Published August 2003
| Version v1
Journal article
Analysis of vibrational modes and phonon density of states of aluminate spinels
Description
The zone-center phonons of MgAl2O4 and ZnAl2O4 have been calculated by applying an angular force constant model. The justified Raman mode (A1g) at 772 cm-1 is taken into consideration for the calculation of the phonons in MgAl2O4. The effect of mass on the interatomic interaction and the vibrational modes in these aluminates is analyzed. The phonon density of states (PDOS) has been calculated in the aluminate spinels by using a sampling method. The effect of heavier Zn on the PDOS is prominent. Also, the lattice dynamics in Zn and Mg aluminate spinels are found to be similar. The calculated results are in good agreement with the experimental data.
Additional details
Publishing Information
- Journal Title
- Journal of the Korean Physical Society
- Journal Volume
- 43
- Journal Issue
- 2
- Series
- 23 refs, 1 fig, 3 tabs
- Journal Page Range
- p. 237-241
- ISSN
- 0374-4884
INIS
- Country of Publication
- Korea, Republic of
- Country of Input or Organization
- Korea, Republic of
- INIS RN
- 41036592
- Subject category
- S74: ATOMIC AND MOLECULAR PHYSICS;
- Descriptors DEI
- ALUMINATES; COMPUTER CALCULATIONS; INTERATOMIC FORCES; MAGNESIUM COMPOUNDS; PHONONS; RAMAN SPECTROSCOPY; SPINELS; VERIFICATION; VIBRATIONAL STATES; ZINC COMPOUNDS
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; ALUMINIUM COMPOUNDS; ENERGY LEVELS; EXCITED STATES; LASER SPECTROSCOPY; MINERALS; OXIDE MINERALS; OXYGEN COMPOUNDS; QUASI PARTICLES; SPECTROSCOPY