Table 3. Pressure Coefficients of the Mn4+ and Cr3+ ZPL (2E → 4A2) Energies in Some Oxide Phosphors.
| material | activator | ΔE/ΔP, meV/GPa | T, K | ref |
|---|---|---|---|---|
| α-Al2O3 | Mn4+ | –1.05 (R1) | 300 | (29) |
| –1.06 (R2) | ||||
| YAlO3 (YAP) | –1.43 | 10 | (30) | |
| Gd3Ga5O12 (GGG) | –2.32 (site 1) | 15 | (31) | |
| –1.85 (site 2) | ||||
| Sr4Al14O25 | –2.64 | 300 | (25) | |
| Mg2TiO4 | –2.4 | 50 | (32) | |
| β-Ga2O3 | –2.0 | 85 | this work | |
| α-Ga2O3 | not estimated | 85 | this work | |
| β-Ga2O3 | Cr3+ | –2.4 (R1) | 85 | (7) |
| –0.6 (R2) | ||||
| –2.4 (R1) | 85 | this work | ||
| –1.2 (R2) | ||||
| β-Ga1.58Al0.4O3 | –1.5 (R1) | 300 | (5) | |
| –1.0 (R2) | ||||
| β-Ga0.38Al1.6O3 | –1.28 (R1) | 300 | (6) | |
| –1.1 (R2) | ||||
| α-Al2O3 | –0.9 (R1) | 300 | (33) | |
| –1.0 (R2) | ||||
| –0.9 (R1) | 300 | (34) | ||
| α-Ga1.58Al0.4O3 | –1.09 | 300 | (6) | |
| α-Ga0.38Al1.6O3 | –1.13 | 300 | (6) |