| abstract |
The present invention provides a method for producingnnoble metal/magnetic metal oxide composite fine particlesncomprising the steps of dispersing magnetic metal oxide finenparticles in a solution containing a noble metal ion or adding tonthe solution a metal ion that can form the magnetic metal oxide,nand then irradiating the resulting dispersion or solution withnultrasonic waves, ionizing radiation or ultraviolet waves; andnnoble metal/magnetic metal oxide composite fine particlesnobtained according to the method. According to the method of thenpresent invention, the desired composite particles can be stablynmass-produced in a high yield. The composite particles thusnobtained are for use in the field of medical care/diagnosis andnlike technical fields in particular. |