Write head having beveled non-magnetic write gap seed layer
US-2015371668-A1 · Dec 24, 2015 · US
Graded bevel tapered write pole design for field enhancement
US8970985B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8970985-B2 |
| Application number | US-201314139069-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 23, 2013 |
| Priority date | Apr 29, 2008 |
| Publication date | Mar 3, 2015 |
| Grant date | Mar 3, 2015 |
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Abstract
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A structure and a process for a perpendicular write pole that provides increased magnetic flux at the ABS is disclosed. This is accomplished by increasing the amount of write flux that originates above the write gap, without changing the pole taper at the ABS. Three embodiment of the invention are discussed.
First claim
Opening claim text (preview).
What is claimed is: 1. A perpendicular magnetic write pole for magnetic recording, having an air bearing surface (ABS), comprising: a first magnetic layer, having a first upper surface and a first planar edge that is normal to said first upper surface and functions as the ABS; on said first magnetic layer, there is formed a second magnetic layer having a second upper surface and a second lower surface that is coplanar with and contiguous with said first upper surface to form a c…
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Physics · mapped topic
- G11B5/1278Primary
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
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Frequently asked questions
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- What does patent US8970985B2 cover?
- A structure and a process for a perpendicular write pole that provides increased magnetic flux at the ABS is disclosed. This is accomplished by increasing the amount of write flux that originates above the write gap, without changing the pole taper at the ABS. Three embodiment of the invention are discussed.
- Who is the assignee on this patent?
- Headway Technologies Inc
- What technology area does this patent fall under?
- Primary CPC classification G11B5/1278. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Mar 03 2015 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).