Hillock formation-a novel approach to sputter texturing media disc substrates

Gao, Chuan; Zhang, B.; Rauch, G.C.; Hwang, Seok-Jae; Malmhäll, R.

doi:10.1109/20.538829

Cited by 3 publications

(1 citation statement)

References 7 publications

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“…The area of contact between slider and disk is much smaller compared with a disk without any texturing, thereby reducing stiction during the start-up process. A lot of effort has been put into the formation, measurement, characterization and evaluation of disk surface texture [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18]. Many techniques, including laser pulse [2][3][4], sputtering [5,6], deposition [7], photolithography [8][9][10][11], chemical etching [12] and traditional lapping [13][14][15], have been developed to produce texture of nanometre-order height on the disk surface.…”

Section: Introductionmentioning

confidence: 99%

Nanometre scale island-type texture with controllable height and area ratio formed by ion-beam etching on hard-disk head sliders

et al. 1999

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It has been common practice to apply a surface texture to the disk surface in a hard disk drive in order to minimize the stiction force caused by the contact of the extremely smooth surfaces of the head slider and disk. The surface of head sliders is usually made as smooth as possible without any purposely formed texture. In this work, a texture on the hard-disk slider surface was formed by ion-beam etching as a result of the different etching rates among the different phases composing the material of the hard-disk slider. By this method, an island-type texture can be formed on the air-bearing surface of the hard-disk slider. The relation between the texturing condition, the slider material and the shape of the obtained texture is discussed. The texture area ratio was 6-36%, and the diameter of the island was in the range of 0.3-4 µm. The texture area ratio and island diameter could be changed by changing the composition of head slider material. The height of island could be linearly controlled from 3-20 nm with an accuracy of ±1 nm by changing the dose of the ion beam. It is concluded that ion-beam texturing is a promising method for producing texture on the slider surface, with the advantage of simple processing.

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Section: Introductionmentioning

confidence: 99%

Nanometre scale island-type texture with controllable height and area ratio formed by ion-beam etching on hard-disk head sliders

et al. 1999

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Low stiction/low glide height head–disk interface for high-performance disk drives (invited)

Fu¹,

Suzuki²

1999

Journal of Applied Physics

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A brief historical review of the head–disk interface evolution is presented, and current limitations when facing stringent tribology requirements for high-density recording are addressed. The tribology performance of sliders with contact landing pads on the air bearing surfaces (the “padded slider”) was studied. Lightly mechanically textured disks, and laser zone-textured disks with shallow bumps (the “light LZT”) to reduce glide avalanche that were specially designed for padded sliders were used. When the smoother mechanically textured surface was applied, we observed inferior constant start-stop (CSS) durability due to possible tribological degradation of the padded slider, and significant landing pad wear was observed on the slider after the CSS test. Rougher surfaces including the light LZT surface, however, were not as sensitive to tribological degradation of the padded slider as the smoother surface, and exhibited better CSS durability as well as less landing pad wear after the test. Hence the optimization effort of padded slider head/disk component design may be reduced if a light texture is applied on the CSS zone. The head–disk interface consisting of a padded slider on a light LZT can better meet the stringent tribology requirements for high density recording needs and therefore it is proposed as an alternative to ramp loading technology in the desktop/server-class disk drives. Hence the better-understood CSS technology is expected to be further extended into future high-performance disk drives.

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Formation and CSS performance of NiP surface textured by argon ion laser

Wang

Liew

et al. 1998

IEEE Trans. Magn.

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Hillock formation-a novel approach to sputter texturing media disc substrates

Cited by 3 publications

References 7 publications

Nanometre scale island-type texture with controllable height and area ratio formed by ion-beam etching on hard-disk head sliders

Nanometre scale island-type texture with controllable height and area ratio formed by ion-beam etching on hard-disk head sliders

Low stiction/low glide height head–disk interface for high-performance disk drives (invited)

Formation and CSS performance of NiP surface textured by argon ion laser

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