Cerium substituted yttrium iron garnet (Ce0.2Y 2.8Fe5O12; Ce-YIG) nanoparticles were produced via the sol-gel method from solutions of Ce-, Y- and Fe-based precursors, a solvent and a chelating agent. The solutions were dried at 200ºC and heat treated at temperatures between 800 ºC and 1400ºC for 3 h in air. The effects of pH and annealing temperature on the structure, phase formation, magnetic properties and crystallite size were investigated. A cubic YIG phase was obtained for the sample annealed at 1400 ºC. The presented results showed that the pH value of the starting solution affects the crystal size and consequently, the saturation magnetization.
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