An Overview on Nanocrystalline ZnFe₂O₄, MnFe₂O₄, and CoFe₂O₄ Synthesized by a Thermal Treatment Method

Table 1

Summery of variation of particle sizes, lattice parameters, saturation magnetization, and coercivity field with temperature calcinations for metal ferrite nanoparticles calcined at 723, 773, 823, and 873 K.

Specimens MeFe2O4	Calcination temperature (K)	Average particle size XRD (nm)	Average particle size TEM (nm)	Lattice parameter (nm)	Saturation magnetization Ms (emu/g)	Coercivity field Hc (Oe)
ZnFerrite 1	723	21	17±7	0.8498	4.49	Negligible
ZnFerrite 2	773	24	22±2.5	0.8468	2.66	Negligible
ZnFerrite 3	823	31	27±5	0.8471	1.81	Negligible
ZnFerrite 4	873	33	31±11	0.8479	0.74	Negligible
MnFerrite 1	723	15	12±4	0.8524	3.06	Negligible
MnFerrite 2	773	17	15±2	0.8577	6.31	Negligible
MnFerrite 3	823	20	17±5	0.8558	7.96	Negligible
MnFerrite 4	873	23	22±4	0.8537	15.78	Negligible
CoFerrite 1	723	15.5	14±8	0.8356	2.14	823
CoFerrite 2	773	16.5	17±6	0.8348	9.84	1225
CoFerrite 3	823	34	29±9	0.8375	18.02	1791
CoFerrite 4	873	37	34±5	0.8368	23.47	1163