Preparation of γ-Fe₂O₃/Ni₂O₃/FeCl₃(FeCl₂) Composite Nanoparticles by Hydrothermal Process Useful for Ferrofluids

Table 1

The elemental analysis from EDX for the precursor (a), and the processed sample in 0.25 M (b), 0.50 M (c), and 1.00 M (d) FeCl₂ solution.

Fe	Ni	Cl	Fe : Ni
(a) 66.58	33.42		2 : 1
(b) 89.02	9.91	1.07	8.98 : 1
(c) 87.61	10.01	2.38	8.75 : 1
(d) 89.52	7.95	2.53	11.26 : 1