Writing element, heat assisted magnetic head sliding block, magnetic head folding-piece assembly and manufacturing method

Abstract

The invention discloses a writing element for a heat assisted magnetic head sliding block. The writing element comprises an air bearing surface for a magnetic recording medium, a first magnetic pole, a second magnetic pole, a coil clamped between the first magnetic pole and the second magnetic pole, a waveguide way for guiding light produced by a light source module installed on a substrate of the heat assisted magnetic head sliding block, and a plasmon unit arranged on the first magnetic pole and nearby the waveguide way, wherein the plasmon unit is provided with a near field light producing surface for spreading near field light to the air bearing surface. The near field light producing surface of the plasmon unit is apart from the air bearing surface for a first preset distance to form a first sunken portion, and a protecting layer is filled in the first sunken portion. The writing element can prevent the plasmon unit from protruding out of the air bearing surface and accordingly improve the performance of the heat assisted magnetic head sliding block. The invention further discloses the heat assisted magnetic head sliding block, a magnetic head folding-piece assembly, a hard disk drive and a manufacturing method.

Description

technical field [0001] The present invention relates to a hard disk drive (hard disk drive, HDD), in particular to a writing element, a thermally assisted magnetic head slider with the writing element, a magnetic head flap assembly and a hard disk drive, and the manufacture of the thermally assisted magnetic head slider method. Background technique [0002] Hard drives are common information storage devices. Figure 1a is a schematic diagram of a typical hard disk drive 100 . It includes a series of rotatable disks 101 mounted on a spindle motor 102, and a head stack assembly (HSA) 130 that rotates around an arm axis 105 to access data on the disks. The HSA 130 includes at least one driving arm 104 and an HGA 150 . Typically, a spindle voice coil motor (not shown) is also included to control the movement of the driving arm 104 . [0003] refer to Figure 1b , the HGA 150 includes a head slider 103 having a thermally assisted head 110 , and a suspension member 190 for sup...

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Problems solved by technology

[0006] However, a high temperature is generated during the writing operation, and under the high temperature condition, the near-field optical end portion of the PG layer 12 having a high light absorption characteristic and a low light refractive index and the magnetic layer 11e protrude out of the ABS 10-10 ( as shown in Figure 1f), which will hit the surface of the magnetic recording medium

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