Raman effect of corundum

The Raman effect of corundum (sapphire) was measured with an Ar+ laser source. The seven expected Raman active phonons were found and their symmetry characters determined. Assignment of the internal and external vibrations of the crystals was made and the effect of birefringence in the Raman selection rules is discussed

1ST-ORDER A1(TO) PHONONS AS EVIDENCE OF DISORDER IN BATIO3

717

FERROELECTRIC PHASE-TRANSITION AND DIELECTRIC ANOMALY IN TRI-GLYCINE SULFATE

114173251151

NORMAL MODE DETERMINATION IN CRYSTALS

10JAN25329

MEASUREMENT OF THE A1-MODES REFLECTIVITY OF BATIO3

302555

ANOMALOUS POLARITON DISPERSION IN LITAO3 NEAR TC

23637738

TEMPERATURE-DEPENDENCE OF DIPOLAR MODES IN FERROELECTRIC BATIO3 BY INFRARED STUDIES

2252396240

TEMPERATURE-DEPENDENT RAMAN STUDY OF H-BONDS AND POSSIBLE PHASE-TRANSITION IN LIHCOO.H2O

6417418

TEMPERATURE BEHAVIOR OF DIELECTRIC-CONSTANT OF TETRAGONAL BATIO3

86137337