Synthesis and properties of La1-xSrxFeO3

Fine particle strontium substituted lanthanum ferrites La1-xSrxFeO3, where x = 0.0-1.0, have been synthesized by the solution combustion method using corresponding metal nitrates, oxalyl dihydrazide (ODH) or tetra formal tris azine (TFTA). Formation of La1-xSrxFeO3 was confirmed by the XRD and the f ine particle nature of the ferrites investigated using SEM, particle size a nalysis and BET surface area measurements. La1-xSrxFeO3 (up to x = 0-0.4) e xhibited low resistivity near the Neel temperatures. La1-xSrxFeO3 with x gr eater than or equal to 0.8 when used as bifunctional electrodes, showed oxy gen evolution and reduction activity comparable with the orthoferrites prep ared by the conventional solid state method. (C) 1999 Elsevier Science B.V. All rights reserved.