Chemical synthesis of monodisperse and magnetic alloy nanocrystal containing thin films
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United States of America Patent
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Oct 16, 2001
Grant Date -
Jul 26, 2001
app pub date -
Mar 5, 2001
filing date -
Jul 26, 1999
priority date (Note) -
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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.
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