IRON COBALT TERNARY ALLOY NANOPARTICLES WITH SILICA SHELLS AND METAL SILICATE INTERFACE

摘要

Superparamagnetic core-shell nanoparticles having a core of an iron cobalt ternary alloy, a shell of a silicon oxide on the core and a metal silicate interface layer between the core and the shell layer are provided. Methods to prepare the nanoparticles are also provided.

主权项

1. A core-shell nanoparticle, comprising:
a core of an iron cobalt ternary alloy; a shell of a silicon oxide coating the core; and a metal silicate interface in a region between the core and the shell; wherein the third component of the ternary alloy is a transition metal selected from the group consisting of scandium, titanium, vanadium, chromium, manganese, nickel, copper and zinc, a particle size of the nanoparticle is from 2 to 200 nm, and the metal silicate of the metal silicate interface comprises at least one of iron silicate, cobalt silicate and the third component transition metal silicate.