Magnetic head and its mfg. method and magnetic recordig and/or reproducing system

A technology of magnetic recording and magnetic head, applied in the direction of magnetic recording, magnetic recording head, data recording, etc., can solve the problems such as the reduction of recording and reproduction efficiency and the limitation of improving the efficiency of magnetic head.
CN1190776CInactive Publication Date: 2005-02-23KK TOSHIBA
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
KK TOSHIBA
Publication Date
2005-02-23
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention provides a magnetic head, which performs highly efficient recording / reproducing even when a magnetic path length is shortened, and a signal wavelength is short. This magnetic head is provided with magnetic body parts and made of a pair of soft magnetic materials, in which main surfaces face a recording medium, and a magnetic gap, in which a gap between the pair of magnetic body parts in a side opposite the main surface is wider than that in the main surface, and continuously changed from the main surface side to the side opposite the main surface.
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Description

[0001] This application claims priority from Japanese Patent Application No. 2000-95082 filed on March 30, 2000, the entire contents of which are hereby incorporated by reference. technical field

[0002] The present invention generally relates to a magnetic head, a method of manufacturing the same, and a magnetic recording and / or reproducing system. Background technique

[0003] It is well known that the efficiency of a magnetic head increases rapidly as the length of the magnetic path of the magnetic circuit decreases. For example, if Figure 18A It is shown that the efficiency increases rapidly as the magnetic path length is reduced to 2 μm (=2000 nm) or less. like Figure 18B As shown in , the magnetic path length means the magnetic part 52a, the magnetic part 53a, the magnetoresistance effect element (such as GMR (giant magnetoresistance effect) element), the magnetic part 53b and the magnetic part through a magnetic head. The length of the magnetic circuit of the por...

Claims

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