| x content (mol) | D (g/cm3) | εr | tanδ | TC (˚C) | Mean grain size (μm) |
| 0.0 | 3.64 | 434 | 0.062 | 286 | 3.0 |
| 0.02 | 3.82 | 604 | 0.047 | 285 | 2.5 |
| 0.04 | 3.84 | 960 | 0.042 | 234 | 1.7 |
| 0.06 | 4.06 | 1135 | 0.032 | 199 | 0.8 |
| 0.08 | 4.29 | 1334 | 0.01 | 149 | 0.4 |
| 0.1 | 4.10 | 1463 | 0.02 | 108 | 1.5 |