Table 1.
Fracture toughness of starting materials, HEPO, and calculated value of mixing law.
| Samples | Ca2Ta2O7 | Ca2Nb2O7 | Gd2Zr2O7 | Mixing law | HEPO |
|---|---|---|---|---|---|
| Fracture toughness (MPa m0.5) | 0.91 ± 0.09 | 1.32 ± 0.08 | 1.86 ± 0.11 | 1.41 | 2.46 ± 0.32 |
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