Coordination compounds containing urea as precursors for oxides—A new route of obtaining nanosized CoFe_2O_4

摘要

Pure CoFe_2O_4 particles with an average size in the range 38-57 A and a surface area of 60-67 m~2 g~(-1) have been produced at a low temperature (450℃) through thermal decomposition of polynuclear coordination compounds containing urea as ligand, with different metal:ligand molar ratios (Fe~(3+) :Co~(2+):urea =2:1:6 and 2:1:8), synthesized by two routes (a precipative and a solid state one).