Patent ID: 7066978
Filing Date: 2006-06-27
Classification: B22F,B82Y,G11B,H01F

Abstract:
1. A method of producing a nanoparticle, the method comprising: a reducing step of adding a reverse micelle solution (II) obtained by mixing a water-insoluble organic solvent containing a surfactant with an aqueous metal salt solution to a reverse micelle solution (I) obtained by mixing a water-insoluble organic solvent containing a surfactant with an aqueous reducing agent solution, to carry out a reducing reaction; and a maturing step of raising the temperature of the reduced mixture of micelle solutions (I) and (II) to mature the reduced mixture after the reducing reaction is completed, wherein the ratio (water/surfactant) by mass of water to the surfactant in each of the reverse micelle solutions (I) and (II) is 20 or less; the reducing reaction temperature is constant in a range from −5 to 30° C.; and the maturing temperature is higher than the reducing reaction temperature and is constant in a range from 30 to 90° C., and the maturing time is 5 to 180 minutes, wherein the nanoparticle forms a CuAu type or Cu