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US-12083602-B2 · Sep 10, 2024 · US
Gas phase synthesis of stable soft magnetic alloy nanoparticles
US10213836B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10213836-B2 |
| Application number | US-201515501309-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 6, 2015 |
| Priority date | Aug 7, 2014 |
| Publication date | Feb 26, 2019 |
| Grant date | Feb 26, 2019 |
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Abstract
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A soft magnetic nanoparticle comprising an iron aluminide nanoalloy of the DO 3 phase as a core encapsulated in an inert shell made of alumina.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for forming soft magnetic nanoparticles each comprising an iron aluminide nanoalloy of the DO 3 phase as a core encapsulated in an inert shell made of alumina, the method comprising: producing a supersaturated vapor of metal atoms of Al and Fe in an aggregate zone by co-sputtering Fe atoms and Al atoms in an Ar atmosphere; producing nanoparticles from the supersaturated vapor; causing the nanoparticles to pass through an aperture with a pressure differential before and after the aperture so as to create a nanocluster beam of the nanoparticles emerging from the aperture; and directing the nanocluster beam to a substrate to deposit the nanoparticles onto the substrate. 2. The method according to claim 1 , wherein the step of producing the super saturated vapor includes applying separate magnetron powers to an Al target and to an Fe target for sputtering. 3. The method according to claim 1 , further comprising exposing the nanoparticles deposited on the substrate to an oxidizing atmosphere to oxide a surface of the nanoparticles.
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Classifications
Coated nanoparticles, e.g. nanoparticles coated with organic surfactant · CPC title
- B22F9/12Primary
starting from gaseous material · CPC title
Aspects linked to processes or compositions used in powder metallurgy · CPC title
containing aluminium · CPC title
Argon · CPC title
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Frequently asked questions
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- What does patent US10213836B2 cover?
- A soft magnetic nanoparticle comprising an iron aluminide nanoalloy of the DO 3 phase as a core encapsulated in an inert shell made of alumina.
- Who is the assignee on this patent?
- Okinawa Inst Science & Tech School Corp
- What technology area does this patent fall under?
- Primary CPC classification B22F9/12. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Feb 26 2019 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).