Patent ID: 8840801
Filing Date: 2014-09-23
Classification: B01J,B22F,B82Y,C22C,H01F,Y10S

Abstract:
1. A method of manufacturing a magnetic cluster colloid, comprising the steps of: (a) Forming a magnetic compound by condensation reaction of a first metal halide based compound when the first metal halide based compound and an organic ligand are mixed with a solvent, wherein the organic ligand comprises sodium alkyl carboxylate; (b) First heating of the magnetic compound to form magnetic particles; and (c) Second heating of the magnetic particles to be agglomerated together to form magnetic clusters; wherein the magnetic clusters are dispersed in the solvent in colloidal state to form the magnetic cluster colloid, wherein, in step (a), a second metal halide (M wherein the metal of the second metal halide based compound is different from the metal of the first metal halide based compound, wherein the magnetic cluster colloid contains more than one metal, and the magnetic cluster colloid has one or more magnetic properties selected from paramagnetism, diamagnetism, ferromagnetism, antiferromagnetism, ferrimagnetism and super paramagnetism, wherein the first heating occurs between 100° C. to 200° C., wherein the second heating occurs between 120° C. to 350° C., wherein an amorphous gel is made in step (a), the amorphous gel undergoes a phase-transition in step (b) which forms a crystalline metal oxide and the crystalline metal oxide is reduced in step (c) to form magnetic clusters.