Gallium synthesis routes

Additionally, LSFMand LSCM powders were synthesized with same synthesis route and organic carrier materials. In synthesis of LSFM and LSCM powders, the stoichiometry used in LSGM synthesis was kept to investigate the effects of different cations (Fe3+ or Cr3+ in place of Ga3+). Iron and chromium were chosen to replace gallium such that the new materials can be evaluated as candidates for SOFC interconnect and cathode materials. 

The stoichiometric compound of gallium and oxygen, Ga203, exists in a wide variety of polymorphic phases, including a, p, y, b, e, and 0 phases that so far have heen identified using powder X-ray diffraction (XRD) [72]. The polymorphs a and p are usually prepared at ambient pressure from thermal decomposition of the nitrate (Ga(N03)3), or via sol-gel synthesis routes followed hy dehydration and recrystal-lization of the gel (Figure 3.3 adapted from [72]). 

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