Method of making a transducer head

Patent metadata

Field	Value
Publication number	US-9437221-B2
Application number	US-201514840600-A
Country	US
Kind code	B2
Filing date	Aug 31, 2015
Priority date	Mar 11, 2013
Publication date	Sep 6, 2016
Grant date	Sep 6, 2016

Abstract

A method of making a transducer head disclosed herein includes depositing a spacer layer on an NFT layer of the transducer head, forming an etch stop layer on a spacer layer of a transducer, depositing a cladding layer on the etch stop layer, and milling the cladding layer at a sloped angle such that the milling stops at the etch stop layer.

First claim

What is claimed is:

1. A partial transducer head, comprising:
a core layer;
a spacer layer;
a near field transducer (NFT) layer; and
an etch stop layer formed at least partially on the spacer layer.

2. The partial transducer head of claim 1 , further comprising a write pole formed on the etch stop layer.

3. The partial transducer head of claim 1 , wherein the etch stop layer is made of amorphous carbon.

4. The partial transducer head of claim 1 , wherein the etch stop layer is made of at least one of (i) metal and (ii) photo resist.

5. The partial transducer of claim 2 , wherein the write pole is surrounded by heat sink material.

6. The partial transducer of claim 5 , wherein the write pole is separated from a first return pole by a cladding layer.

7. The partial transducer of claim 5 , wherein the write pole has a notched surface facing the NFT.

8. A transducer head, comprising:
a write pole with a notched surface facing a near field transducer (NFT); and
a heat sink layer surrounding the write pole at an air-bearing surface (ABS) of the transducer head, wherein the spacing between the NFT and the write pole is controlled during the manufacture of the transducer head by using a spacer layer and a photo resist.

9. The transducer head of claim 8 , wherein the write pole is separated from a first return pole by a cladding layer.

10. The transducer head of claim 8 , further comprising a core layer separating the NFT from a second return pole.

11. The transducer head of claim 10 , further comprising a read sensor separated from the second return pole by a top shield.

12. The transducer head of claim 8 , wherein the notched surface of the write pole has a curved shape.

13. The transducer head of claim 8 , wherein the NFT intersects a surface of the write pole facing the NFT.

14. The transducer head of claim 8 , wherein the notched surface of the write pole has a rectangular shape.

15. The transducer head of claim 8 , wherein the notched surface of the write pole has a triangular shape.

16. A partial transducer head, comprising:
a spacer layer;
a near field transducer (NFT) layer; and
an etch stop layer formed at least partially on the spacer layer.

17. The partial transducer head of claim 16 , further comprising a core layer on the opposite side of the NFT from the side having a write pole layer.

18. The partial transducer head of claim 16 , further comprising a cladding layer deposited on the etch stop layer.

19. The partial transducer head of claim 18 , wherein the cladding layer is milled at a sloped angle.

Assignees

• Seagate Technology Llc

Inventors

• Lee Lien
• Zhao Yongjun
• Zou Lijuan
• Ostrowski Mark Henry

Classifications

• G11B5/6088

  Optical waveguide in or on flying head · CPC title

• Y10T29/49048

  Machining magnetic material [e.g., grinding, etching, polishing] · CPC title

• G11B5/314 Primary

  where the layers are extra layers normally not provided in the transducing structure, e.g. optical layers (G11B5/3196 takes precedence) · CPC title

• G11B5/3163

  Fabrication methods or processes specially adapted for a particular head structure, e.g. using base layers for electroplating, using functional layers for masking, using energy or particle beams for shaping the structure or modifying the properties of the basic layers · CPC title

• G11B2005/0021

  Thermally assisted recording using an auxiliary energy source for heating the recording layer locally to assist the magnetization reversal · CPC title