Title:
【発明の名称】薄膜磁気変換器及びその製造法
Document Type and Number:
Japanese Patent JP2608971
Kind Code:
B2
Abstract:
An ultra small track width magnetic transducer and manufacturing method. The transducer has two coplanar confronting magnetic poles provided by a thin film layer of magnetic material. The thickness of the layer defines a track width. A transducing gap is etched in the magnetic layer by utilizing focused ion beam milling technology. The thusly obtained gap has a predetermined length and depth and it separates the magnetic layer into two confronting coplaner magnetic poles. A layer of non-magnetic material is deposited over the magnetic layer to fill the transducing gap. The transducing gap may be etched in a plane extending orthogonally to the plane of the magnetic core layer. Alternatively, the transducing gap plane may extend at an oblique angle to the magnetic core layer to obtain a transducing gap useful in aszimuth recording/playback.
Inventors:
Raghabang Kh Pisharroday
Beverly Earl Gooch
Beverly Earl Gooch
Application Number:
JP17254590A
Publication Date:
May 14, 1997
Filing Date:
June 29, 1990
Export Citation:
Assignee:
AMPEX CORPORATION
International Classes:
G11B5/31; G11B5/53; (IPC1-7): G11B5/31
Domestic Patent References:
| JP5885916A | ||||
| JP5885918A |
Attorney, Agent or Firm:
Takehiko Suzue (3 outside)