Chapter 26. Mechanisms and kinetics in the solid state

Peculiarities of layered perovskite-related GdSrFeO4 compound solid state synthesis

“…Mentioned previously difficulties are connected with thermal instability and multi-staged formation character of many from considered oxides [11][12][13][14][15][16][17]. Survey of literature on the data subject has shown the importance of mechanism and kinetics formation investigation to develop the optimal synthesis conditions of such complex compounds [18][19][20]. Besides, it should be taken into account, that formation of layered oxides with perovskite-related structure of Ruddlesden-Popper (RP)-type often comes through the formation of intermediate compounds, also including RP phases of different composition, which can be in some cases stable enough to prevent the yield of required products [21][22][23][24][25].…”