Nanostructured thin film and method for controlling surface properties thereof
US-8974889-B2 · Mar 10, 2015 · US
Ultra-density nanostructure GdFe thin film with large perpendicular magnetic anisotropy for a new generation of spintronic device
US11804322B1 · US · B1
| Field | Value |
|---|---|
| Publication number | US-11804322-B1 |
| Application number | US-202318217844-A |
| Country | US |
| Kind code | B1 |
| Filing date | Jul 3, 2023 |
| Priority date | Jul 3, 2023 |
| Publication date | Oct 31, 2023 |
| Grant date | Oct 31, 2023 |
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Abstract
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A method of fabrication of nanostructured thin film includes depositing a Gd 20 Fe 80 alloy by using the thermal evaporating technique on the top of a high-density nanoporous alumina template. In a particular embodiment, the high-density nanoporous alumina template has a pore diameter of 92 nm and interpore distance of 103 nm and the Gd 20 Fe 80 nanostructured thin film has a layer thickness of 48 nm. The present method results in nanostructured GdFe thin films with large perpendicular magnetic energy density of 4.8 erg/cm 2 , which is 15 times higher than obtained in the conventional ferromagnetic alloy thin films with PMA.
First claim
Opening claim text (preview).
We claim: 1. A method of forming a GdFe nanostructured thin film comprising: preparing a nanoporous alumina template; and depositing a nanostructured Gd 20 Fe 80 thin film on top of the nanoporous alumina template using a thermal evaporating technique, wherein the nanoporous alumina template has a pore diameter of 92 nm and an interpore distance of 103 nm, and wherein the Gd 20 Fe 80 thin film has a thickness of 48 nm on top of the nanoporous alumina template. 2. The method according to claim 1 wherein the Gd 20 Fe 80 thin film has an effective magnetic anisotropy of 4.8 erg/cm 2 .
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Classifications
- H01F10/3286Primary
Spin-exchange coupled multilayers having at least one layer with perpendicular magnetic anisotropy · CPC title
Manufacture or treatment of nanostructures · CPC title
containing rare earth metals (H01F10/133 takes precedence) · CPC title
- H01F1/0072Primary
one dimensional, i.e. linear or dendritic nanostructures · CPC title
Nanomagnetism, e.g. magnetoimpedance, anisotropic magnetoresistance, giant magnetoresistance or tunneling magnetoresistance · CPC title
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- What does patent US11804322B1 cover?
- A method of fabrication of nanostructured thin film includes depositing a Gd 20 Fe 80 alloy by using the thermal evaporating technique on the top of a high-density nanoporous alumina template. In a particular embodiment, the high-density nanoporous alumina template has a pore diameter of 92 nm and interpore distance of 103 nm and the Gd 20 Fe 80 nanostructured thin film has a layer thickness …
- Who is the assignee on this patent?
- Univ King Faisal
- What technology area does this patent fall under?
- Primary CPC classification H01F10/3286. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Oct 31 2023 00:00:00 GMT+0000 (Coordinated Universal Time) (B1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).