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| Calcination temperature | a (Å) | b (Å) | c (Å) | β (degree) | Volume of the unit cell (Å)3 |
|---|---|---|---|---|---|
| JCPDS 00-014-0688 | 5.1950 | 11.7010 | 5.0920 | 90.38 | 309.52 |
| 400 °C | 5.1670 | 11.6439 | 5.0732 | 90.10 | 305.220 |
| 500 °C | 5.1783 | 12.6862 | 4.7873 | 90.37 | 314.558 |
| 600 °C | 5.2028 | 12.9060 | 5.0806 | 94.37 | 340.155 |
