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The paper presents the synthesis of CoFe2O4 nanocrystallites embedded in PVA-SiO2 hybrid matrix by a modified sol-gel method. The paper is focused on two aspects: (1) formation of cobalt and iron carboxylate-type precursors (oxalate, lactate, malonate and succinate) in the presence of tetraethylorthosilicate, polyvinylalcohol (PVA) and different diols: 1,2-ethanediol, 1,2-propanediol, 1,3-propanediol,...
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