Fa. Tourinho et al., Electric double layered magnetic fluids (EDL-MF) based on spinel ferrite nanostructures [(M1-x+2Fex+3)](A)[(Fe2-x+3Mx+2)](B)O-4(-2), BRAZ J PHYS, 28(4), 1998, pp. 413-427
This paper presents a review of Electric Double Layered Magnetic Fluids (ED
L-MF) based on spinel ferrite type [(M1 - x+3Fex+3)](A)[(Fe-2 - x(+3) M-x(2))](B)O-4(-2), with M(II) = Mn, Co, Ni, Cu and Zn. The chemical synthesis
of the nanoparticles using hydrothermal techniques and their complete pepti
zation in an aqueous medium results in a ultra stable magnetic colloid, EDL
-MF. The characterization of the particles was performed using S-ray diffra
ction and electronic microscopy techniques. The resulted sols were investig
ated by magnetic, magnetooptical measurements and magnetic resonance techni
ques.