Table 1. Spectral position of the Raman peaks of the phonon modes of β-Ga2O3, given in cm−1.
Phonon mode | Experiment |
Theory |
||||||
---|---|---|---|---|---|---|---|---|
This work | ref. 4 | ref. 5 | ref. 6 | This work | ref. 4 | ref. 5 | ref. 7 | |
111.0 | 111 | 110.2 | 112 | 113.5 | 113 | 104 | 104.7 | |
114.8 | 114 | 113.6 | 115 | 118.6 | 114 | 113 | 112.1 | |
144.8 | 147 | 144.7 | 149 | 145.6 | 152 | 149 | 141.3 | |
169.9 | 169 | 169.2 | 173 | 176.4 | 166 | 165 | 163.5 | |
200.2 | 199 | 200.4 | 205 | 199.1 | 195 | 205 | 202.3 | |
320.0 | 318 | 318.6 | 322 | 318.5 | 308 | 317 | 315.8 | |
346.6 | 346 | 346.4 | 350 | 342.5 | 353 | 346 | 339.7 | |
353.2 | 353 | n.o. | 355 | 359.2 | 360 | 356 | 348.3 | |
416.2 | 415 | 415.7 | 421 | 432.0 | 406 | 418 | 420.2 | |
474.9 | 475 | n.o. | 479 | 472.8 | 468 | 467 | 459.4 | |
474.9 | 475 | 473.5 | 480 | 486.1 | 474 | 474 | 472.8 | |
630.0 | 628 | 628.7* | 635 | 624.4 | 628 | 600 | 607.1 | |
652.3 | 651 | 652.5* | 659 | 653.9 | 644 | 626 | 627.1 | |
658.3 | 657 | n.o.* | 663 | 655.8 | 654 | 637 | 656.1 | |
766.7 | 763 | 763.9 | 772 | 767.0 | 760 | 732 | 757.7 |
A more likely assignment for two peaks from ref. 5 indicated by “*” was chosen to enhance the comparability, “n.o.” denotes modes which were not observed.