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Magnetic head and method of producing the same

A magnetic head and magnetic pole technology, applied in the direction of magnetic recording head, manufacturing magnetic head surface, magnetic head using thin film, etc., can solve problems such as magnetic loss

Inactive Publication Date: 2007-12-12
FUJITSU LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, disposing a different metal layer 22 under the lower magnetic pole 12 and the rear gap portion 15 causes magnetic loss to occur in the write head 10.

Method used

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  • Magnetic head and method of producing the same
  • Magnetic head and method of producing the same
  • Magnetic head and method of producing the same

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Experimental program
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Embodiment Construction

[0036] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0037] 1A-1F are explanatory diagrams showing the steps of manufacturing the magnetic head of the present invention. The method of the present invention is characterized by the step of forming a recording coil, a lower magnetic pole, and a rear gap portion of a write head of a magnetic head. These unique steps will be explained.

[0038] In FIG. 1A , a lower magnetic pole layer 16 of a write head is formed on a substrate, and then an insulating layer 18 for electrically insulating a recording coil 14 and the lower magnetic pole layer 16 is formed. Formed from alumina or SiO by sputtering 2 Insulation layer 18 made.

[0039] In FIG. 1B , a copper seed layer 20 serving as a power feeding layer of electrolytic plating is formed on the entire surface of a substrate on which an insulating layer 18 has been formed to form a coil 14 by electrolytic p...

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PUM

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Abstract

The present invention provides a magnetic head and method thereof. The method is capable of producing a compact magnetic head, which has superior characteristics with a small size recording coil and which is capable of restraining magnetic loss. The magnetic head includes a recording coil, a lower magnetic pole and a back gap section. The method comprises the steps of: forming a seed layer for plating on a lower layer; forming the recording coil on the seed layer, by electrolytic plating, with using the seed layer as an electric power feeding layer; patterning resist on the seed layer so as to form the lower magnetic pole and the back gap section; removing exposed parts of the seed layer; exposing parts of the lower layer, in which the lower magnetic pole and the back gap section will be formed; and forming the lower magnetic pole and the back gap section in the lower layer, by electrolytic plating.

Description

technical field [0001] The present invention relates to a magnetic head and a method of manufacturing the same, and more particularly, the present invention relates to a magnetic head featuring a unique structure of a write head and a method of manufacturing the same. Background technique [0002] The structures of the read head 8 and the write head 10 of a conventional magnetic head of a magnetic disk drive unit are shown in FIG. 4 . In read head 8, MR (magnetoresistive) element 5 is sandwiched between lower shield layer 6 and upper shield layer 7; in write head 10, write-gap (write-gap) 11 is sandwiched between lower magnetic pole 12 and upper magnetic pole 13 between. [0003] The write head 10 includes: an upper magnetic pole 13 ; a lower magnetic pole layer 16 ; a rear gap portion 15 connecting the upper magnetic pole 13 and the lower magnetic pole layer 16 ; and a recording coil 14 wound on the rear gap portion 15 . A magnetic route generating a magnetic field in the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B5/127G11B5/31
CPCG11B5/3163G11B5/3123G11B5/127G11B5/187G11B5/33
Inventor 小野藤英伊藤隆司
Owner FUJITSU LTD