Substrates for thin-film magnetic heads, magnetic head sliders, and hard disk drive devices
US-2015380025-A1 · Dec 31, 2015 · US
Magnetic devices and magnetic media with graphene overcoat
US9305571B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9305571-B2 |
| Application number | US-64685109-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 23, 2009 |
| Priority date | Dec 23, 2009 |
| Publication date | Apr 5, 2016 |
| Grant date | Apr 5, 2016 |
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Abstract
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A magnetic disk according to one embodiment includes a recording layer; and a layer of graphene formed above the recording layer. A nucleation layer may be formed between the recording layer and the graphene layer in some approaches. A magnetic device according to another embodiment includes a transducer; a nucleation layer formed above the transducer; and a layer of graphene formed on the nucleation layer. A method according to one embodiment includes forming a nucleation layer above a magnetic layer of a magnetic disk or magnetic device; and forming a layer of graphene on the nucleation layer. A method according to another embodiment includes depositing SiC above a magnetic layer of a magnetic disk or magnetic device, the SiC being equivalent to several monolayers thick; and surface heating the SiC to selectively evaporate some of the Si from the SiC for forming a layer of graphene on a SiC layer. Additional products and methods are also presented.
First claim
Opening claim text (preview).
What is claimed is: 1. A magnetic disk, comprising: a perpendicular magnetic recording layer; and a single graphene monoatomic layer formed above the perpendicular magnetic recording layer as a continuous film extending across the perpendicular magnetic recording layer, wherein the graphene monoatomic layer is a single atomic sheet of sp 2 -bonded carbon atoms that are densely packed in a honeycomb crystal lattice, wherein the graphene monoatomic layer is one carbon atom in thic…
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Classifications
Physics · mapped topic
- G11B5/3106Primary
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
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Frequently asked questions
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- What does patent US9305571B2 cover?
- A magnetic disk according to one embodiment includes a recording layer; and a layer of graphene formed above the recording layer. A nucleation layer may be formed between the recording layer and the graphene layer in some approaches. A magnetic device according to another embodiment includes a transducer; a nucleation layer formed above the transducer; and a layer of graphene formed on the nucl…
- Who is the assignee on this patent?
- Gurney Bruce A, Marinero Ernesto E, Pisana Simone, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification G11B5/3106. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Apr 05 2016 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).