Table 1. Summary of the crystal growth conditions.
| Crystal | Growth rate (mm h−1) | Absolute pressure (bar) | Gas flow rates (L min−1) | Growth setup | Feed |
|---|---|---|---|---|---|
| M1 | 50 | 7.5 | Ar: 3, O2: 1 | V.1 | Arc-fusion type |
| M2 | 40 | 10.75 | O2: 1.1 | V.2 | Arc-fusion type |
| M3 | 40 (main part) | 7.5 | Ar: 0.75, O2: 0.25 | V.2 | Arc-fusion type |
| 20 (last part) | |||||
| M4 | 35–48 | 7.5 | Ar: 1.3, O2: 0.33 | V.2 | Ceramic made from 5N powders (Roth Rotimetic) |
| M5† | 40–50 | 7.5 | Ar: 1.3, O2: 0.33 | V.2 | Machined Kojundo ceramic |
| M6 | 40 | 7.5 | Ar: 1.3, O2: 0.33 | V.2 | Machined Kojundo ceramic |
†
For this exceptional case the growth direction changed from 〈100〉 to 〈110〉 directly after seeding.