. 2023 May 26;9(6):e16601. doi: 10.1016/j.heliyon.2023.e16601

Table 3.

Preparation methods of transition metals substituted spinel ferrite NPs.

Metal ferrite NPs	Dopants	Preparation Method	References
NiFe₂O₄	Zn⁺²	Sol-gel auto-combustion	[139]
MgFe₂O₄	Zn⁺²	Sol-gel	[140]
CoFe₂O₄	Zn⁺²	Co-precipitation	[141]
SrFe₂O₄	Ni⁺²	Co-precipitation	[142]
NiFe₂O₄	Al³⁺	Sol-gel auto-combustion	[143]
Ni–Mn–CoFe₂O₄	Al³⁺	Sol-gel	[144]
Mn Fe₂O₄	Cu⁺²	Solvothermal	[145]
Co Fe₂O₄	Cu⁺²	Co-precipitation	[146]
CoFe₂O₄	Mn²⁺	Sol-gel	[147]
Fe₃O₄	Mn²⁺	Co-precipitation	[148]
Zn–LaFe₂O₄	Cr⁺²	Sonochemical	[149]
Mg–Mn Fe₂O₄	Ag⁺	Sol-gel	[150]
NiFe₂O₂	Ag⁺	Co-precipitation	[151]