Patent Number: 6,254,662

Title: Chemical synthesis of monodisperse and magnetic alloy nanocrystal containing thin films

Abstract: A method and structure for forming magnetic alloy nanoparticles includes forming a metal salt solution with a reducing agent and stabilizing ligands, introducing an organometallic compound into the metal salt solution to form a mixture, heating the mixture to a temperature between 260.degree. and 300.degree. C., and adding a flocculent to cause the magnetic alloy nanoparticles to precipitate out of the mixture without permanent agglomeration. The deposition of the alkane dispersion of FePt alloy particles, followed by the annealing results in the formation of a shiny FePt nanocrystalline thin film with coercivity ranging from 500 Oe to 6500 Oe.

Inventors: Murray; Christopher Bruce (Ossining, NY), Sun; Shouheng (Ossining, NY), Weller; Dieter K. (San Jose, CA)

Assignee: International Business Machines Corporation

International Classification: B22F 9/24 (20060101); B22F 9/16 (20060101); C21B 15/00 (20060101); G11B 5/84 (20060101); H01F 1/00 (20060101); B22F 001/00 (); B22F 009/00 (); C21B 015/04 (); C21B 005/20 (); C22C 001/04 ()

Expiration Date: 07/03/2018