Method of synthesis | SG | CC | MS | SP | |||||
Sample | LM | LSM | LM | LSM | LM | LSM | LM | LSM | |
La, % at. | 20.8 | 12.7 | 18.9 | 16.4 | 19.3 | 17.4 | 18.5 | 15.8 | |
Mn, % at. | 10.0 | 12.8 | 11.3 | 11.9 | 10.2 | 11.8 | 12.0 | 13.4 | |
share of Mn4+/Mn, % | 25.4 | 25.8 | 23.9 | 24.1 | 14.2 | 41.4 | 17.7 | 21.7 | |
Sr, % at. | - | 2.8 | - | 2.6 | - | 2.3 | - | 4.3 | |
O, % at. | 56.6 | 59.0 | 59.2 | 57.2 | 58.7 | 56.5 | 56.4 | 58.9 | |
C, % at. | 12.6 | 12.7 | 10.6 | 11.9 | 11.8 | 12.0 | 13.1 | 7.6 | |
La:Mn | T | 1:1 | 0.8:1 | 1:1 | 0.8:1 | 1:1 | 0.8:1 | 1:1 | 0.8:1 |
E | 2.1:1 | 1:1 | 1.7:1 | 1.4:1 | 1.9:1 | 1.5:1 | 1.5:1 | 1.2:1 | |
La:Sr | T | - | 4:1 | - | 4:1 | - | 4:1 | - | 4:1 |
E | - | 4.5:1 | - | 6.3:1 | - | 7.6:1 | - | 3.7:1 |