Simple Synthesis and Characterization of Cobalt Ferrite Nanoparticles by a Thermal Treatment Method

Table 1

Average particle size (nm) of CoFe₂O₄ nanoparticles determined from XRD and TEM and magnetic properties observed from VSM technique at room temperature for calcined samples at 673, 723, 823, and 923 K.

CoFe2O4 nanoparticles	Calcination temperature (K)	Average particle size XRD (nm)	Average particle size TEM (nm)	Saturation magnetization 𝐌𝐬 (emu/g)	Remanent magnetization 𝐌𝐫 (emu/g)	Coercivity 𝐇𝐜 (Oe)	Remanence ratio (Mr/Ms)
CoFerrite 1	673	10	12.5	1.15	0.10	138	0.087
CoFerrite 2	723	15.5	14	2.14	0.57	823	0.266
CoFerrite 3	823	34	29	18.02	9.02	1791	0.500
CoFerrite 4	923	41	39	28.52	11.61	1002	0.407