Verfahren zur Herstellung eines Dünnschicht-Magnetwandlers
摘要
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.
申请公布号
DE4020206(C2)
申请公布日期
1994.03.31
申请号
DE19904020206
申请日期
1990.06.25
申请人
AMPEX CORP., REDWOOD CITY, CALIF., US
发明人
PISHARODY, RAGHAVAN K., PALO ALTO, CALIF., US;GOOCH, BEVERLEY R., SUNNYVALE, CALIF., US