After spending some time on understanding the chemistry of Sol-Gel synthesis. I've made a short overview I need you guys to let me know if it's good or not.

I am specifying the pechini method here in which a chelating agent is used while salt solutions are made in water and ethylene glycol.

these are steps for bismuth ferrite (BiFeO3) synthesis.

Here are the steps.

Iron nitrate and EDTA solution in water and Bismuth nitrate solution in ethylene glycol.

1. Formation of Iron hydroxide (need your help. it may lead towards formation of Fe-O-Fe) while heating.

2. Formation of Bismuth glycolate

3. Mixing of these salts together with EDTA

4. Formation of Metal EDTA complex (Here I need your help is it possible for the complex to be between 1 EDTA molecule and Fe, Bi to different metals) if yes then a bi metal complex. Otherwise two complexes in one solution.

5. drying to form gel results in crosslinking (need your help how will it work and happen).

6. Drying to form Xerogel and complete removal of solvents.

7. calcination at high temperature to decompose the Metal-EDTA complex results on formation of metal ions and which at the end form BiFeO3.

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