Rietveld refinement of BaFe12O19@MnO2 at hydrothermal temperatures and holding times.
| Description | 140 °C, 12 h | 160 °C, 12 h | 180 °C, 12 h | 160 °C, 9 h | 160 °C, 15 h |
|---|---|---|---|---|---|
| SIG | 2.184 | 2.108 | 2.446 | 2.618 | 1.853 |
| R wp (%) | 18.125 | 15.035 | 19.006 | 18.647 | 13.446 |
| R exp (%) | 7.116 | 7.132 | 6.819 | 7.122 | 7.254 |
| a (Å) | 5.8932 | 5.8931 | 5.8936 | 5.8933 | 5.8930 |
| c (Å) | 23.1974 | 23.1984 | 23.1975 | 23.1960 | 23.1970 |
| Volume (Å3) | 697.591 | 697.598 | 697.679 | 697.607 | 697.681 |
| Density (g cm−3) | 5.290 | 5.290 | 5.290 | 5.290 | 5.290 |
| Crystallite size (nm) | 57.800 | 59.220 | 65.580 | 44.480 | 69.580 |