CORE/SHELL TYPE PD/FE2O3NANOPARTICLE, METHOD FOR PRODUCING THE SAME, AND FEPD/FE NANOPARTICLE OBTAINED BY USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a Pd/Fe2O3nanoparticle which can give an FePd/Fe magnetic nanoparticle in which the formation of the coarsened part of Fe is suppressed, and individual particles are isolated by performing hydrogen reduction heat treatment, to provide a method for producing the same, and to provide an FePd/Fe magnetic nanoparticle in which the formation of the coarsened part of Fe is suppressed, and individual particles are isolated.

SOLUTION: The core/shell type Pd/Fe2O3b nanoparticle is composed of a Pd core phase and an Fe2O3shell phase in which a core/shell structure can be confirmed by evaluation according to at least one element analysis by a TEM image, a HAADF image or an EDX (Energy Dispersive X-ray Spectrometer), and in which the average Pd compositional ratio obtained by EDX is ≤50 atm%. The production method uses the core/shell type Pd/Fe2O3nanoparticle. The FePd/Fe nanoparticle is obtained by subjecting the core/shell type Pd/Fe2O3nanoparticle to hydrogen reduction heat treatment.

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