METHOD OF MANUFACTURING FEPT-BASED COMPOSITE NANO PARTICULATES

摘要

PROBLEM TO BE SOLVED: To provide a method of manufacturing FePt-based composite nano particulates which consists of a composite nano structure and has a high coercive force and a magnetization.;SOLUTION: The method of manufacturing the FePt-based composite nano particulates includes: a reaction process of preparing a reaction solution Y containing FePt nanoparticles, a Fe raw material, and a reducing agent in a solvent and heating the reaction solution to obtain composite nano particulates intermediate body having Fe or Fe oxide on surfaces of the FePt nanoparticles; and a heat-treatment process of heat-treating the composite nano particulates intermediate body in a hydrogen atmosphere to obtain FePt-based composite nano particulates having Fe or/and Fe₃Pt on the surfaces of FePt nanoparticles.;COPYRIGHT: (C)2010,JPO&INPIT