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Magnetic head, disk drive with the same and method of manufacturing magnetic head

A manufacturing method and magnetic head technology, applied to magnetic recording heads, orthogonally magnetized magnetic heads, magnetic heads using thin films, etc., can solve the problems of uneven magnetic field, inability to obtain good oscillation of the rotary torque oscillator, and difficulty in rotating the magnetization of the oscillating layer, etc.

Active Publication Date: 2017-04-05
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is, there is a magnetic field unevenness in the height direction of the write gap (depth direction from the ABS)
Therefore, the magnetization of the oscillating layer and the spin injection layer tends to be directed toward the traveling direction of the head at a position farther from the ABS, but tends to become unstable on the ABS side.
That is, the magnetization of the oscillation layer becomes difficult to rotate equally
As a result, good oscillation of the rotary torque oscillator cannot be obtained, and the oscillation characteristics will be degraded

Method used

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  • Magnetic head, disk drive with the same and method of manufacturing magnetic head
  • Magnetic head, disk drive with the same and method of manufacturing magnetic head
  • Magnetic head, disk drive with the same and method of manufacturing magnetic head

Examples

Experimental program
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Effect test

no. 1 Embodiment approach

[0030] figure 1 The internal structure is shown by removing the top cover of the hard disk drive (HDD) according to the first embodiment as the disk device, figure 2 Indicates the head in the floating state. like figure 1 As shown, the HDD includes a housing 10 . The housing 10 includes a rectangular box-shaped base 12 with an open upper surface, and a top cover (not shown) that closes the upper end opening of the base 12 by screwing a plurality of screws into the base 12 . The base 12 includes a rectangular bottom wall 12a and side walls 12b erected along the periphery of the bottom wall 12a. The top cover is driven to the base 12 through a plurality of screw threads, and the upper end opening of the base 12 is closed.

[0031] In the casing 10 , for example, two magnetic disks 16 as recording media and a spindle motor 18 as a drive unit for supporting and rotating the magnetic disks 16 are provided. The spindle motor 18 is arranged on the bottom wall 12a. Each magneti...

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Abstract

The invention provides a magnetic head which can realize stable high-frequency assistance and high recording density, a disk drive with the same and a method of manufacturing the magnetic head. The magnetic head includes an air bearing surface (43), a first surface on which contact pads connected to elements are provided, a pair of second surfaces provided respectively with a connection terminal connected to the contact pad, a main pole (60) with a distal end portion extending to the air bearing surface, a write shield (62) opposing the distal end portion of the main pole with a write gap therebetween, and a high-frequency oscillator (65) provided between the main pole and the write shield within the write gap and electrically connected to the main pole and the write shield. The high-frequency oscillator includes a spin injection layer (65a) and an oscillation layer (65c), and at least the oscillation layer is recessed in a direction away from the air bearing surface.

Description

[0001] Associate application [0002] This application enjoys the priority of the basic application based on Japanese Patent Application No. 2015-194438 (filing date: September 30, 2015). This application incorporates the entire content of the basic application by referring to this basic application. technical field [0003] Embodiments of the present invention relate to a magnetic head having a high-frequency auxiliary element, a disk device including the magnetic head, and a method of manufacturing the magnetic head. Background technique [0004] In recent years, as a disk device, a magnetic disk device using a magnetic head for perpendicular magnetic recording has been proposed in order to achieve higher recording density, larger capacity, or smaller size. In such a magnetic head, the recording head includes a main magnetic pole that generates a magnetic field in a vertical direction, and a write-shield magnetic pole disposed on the trailing side of the main magnetic pol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B5/31G11B5/11G11B5/48
CPCG11B5/11G11B5/3163G11B5/4806G11B5/235G11B5/3146G11B5/3173G11B5/4853G11B2005/0024G11B5/1278G11B5/3133G11B5/3169G11B5/1871G11B5/315
Inventor 小泉岳田口知子鸿井克彦
Owner KK TOSHIBA
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