Method for producing nanoparticles of magnetically hard...

Details Method for producing nanoparticles of magnetically hard... Method for producing nanoparticles of magnetically hard...

2006-04-04

2006-04-04

Wyszomierski, George (Department: 1742)

Specialized metallurgical processes, compositions for use therei

Processes

Producing or purifying free metal powder or producing or...

C075S370000

Reexamination Certificate

active

07022156

ABSTRACT:
The invention provides methods for producing nanoparticles having a CuAu type or Cu3Au type magnetically hard ordered alloy phase. One method includes a step of reducing, in liquid phase, a base metal and then reducing, in liquid phase, a noble metal. Another method includes a step of reducing, in liquid phase, at first a base metal and a part of a noble metal, and then reducing, in liquid phase, a remainder of the noble metal in liquid phase.

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patent: 2004/0074336 (2004-04-01), Daimon et al.
patent: 0 938 728 (2002-07-01), None
Binary Alloy Phase Diagrams, vol. 2, Thaddeus B. Massalski, Editor-in-Chief, 1986, American Society for Metals, p. 2173.
Shouheng Sun et al.; “Monodisperse FePt Nanoparticles and Ferromagnetic FePt Nanocrystal Superlattices”; Science vol. 287; Mar. 17, 2000; pp. 1989-1993.

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