| Calculate by Scherer equation (XRD) | From TEM | |||
| HAp | Mn3O4 |
| HAp | Mn3O4 |
| Distance | Distance | Statistical Function | Distance | Distance |
| nm | Nm | Base Unit | nm | Nm |
| 22.62 | 8.91 | Count | 5 | 5 |
| 26.38 | 9.09 | Mean | 23.58 | 9.20 |
| 18.66 | 11.52 | Minimum | 18.66 | 8.14 |
| 28.42 | 8.34 | Maximum | 28.42 | 11.52 |
| 21.79 | 8.14 | Standard Deviation | 3.86 | 1.35 |
| Cal. by XRD | 4.2 | 3.6 | ||