“…7-10 Based on these excellent properties, CoFe 2 O 4 is used in high frequency magnets, microwave absorbers, magnetic catalysis, magnetic bulk cores, magnetic resonance imaging, and drug delivery. 8,11 The CoFe 2 O 4 NPs have been synthesized by various methods including coprecipitation, [12][13][14][15][16] microemulsion, [17][18][19][20] mechanical alloying, [21][22][23] hydrothermal, [24][25][26][27][28][29][30] and sol-gel autocombustion. [31][32][33][34][35] Among these methods, sol-gel method offers a flexible approach to obtaining a diverse range of materials without use of expensive processing technologies, such as vacuum methods.…”