The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
Copyrights notice
The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
레이저 영역 텍스처(LZT) 박막 디스크 매체 위를 비행하는 PZT 글라이드 슬라이더의 글라이드 신호에 대한 주파수 및 시간 영역 분석을 사용하여 작은 디스크 슬라이더 간극에서 슬라이더 진동을 결정했습니다. 슬라이더 진동은 특히 균일하게 배치된 레이저 범프와 LZT 매체에 대한 공기 베어링 강성으로 인한 효과에 의존하는 것으로 나타났습니다. 우리는 슬라이더에 있는 크고 톱니 모양의 분화구 모양의 레이저 범프(10X)보다 작고 뾰족한 고밀도 레이저 범프(1X)가 공기 흐름에 더 뚜렷한 영향을 미친다는 것을 발견했습니다. 따라서 우리는 레이저 범프 밀도가 슬라이더 진동에 미치는 영향을 조사한 결과 레이저 범프 밀도가 약간 높을수록(3X 대 2X) 슬라이더 진동이 더 높아진다는 사실을 발견했습니다. 공진 진동이 주요 글라이드 문제인 반면, 레이저 범프 밀도의 영향은 최근 글라이드 높이가 0.5μ"(12nm)로 매우 낮은 경우에도 중요해졌습니다. 그 영향은 디스크 슬라이더 간극이 커지면 명확하게 관찰할 수 있습니다. 매우 작습니다. 이렇게 매우 작은 디스크-슬라이더 간격에서는 최소한의 슬라이더 진동이라도 헤드-디스크 인터페이스에 해로울 수 있습니다. 슬라이더 진동의 다양한 기여와 헤드-디스크 인터페이스의 손상 가능성을 고려하면 다음이 분명합니다. 레이저 범프 설계의 최적화는 활공 높이와 정지 계수를 넘어 낮은 활공 높이와 마찰 계수를 유지하면서 진동으로 인한 비행 높이 변화에 대한 레이저 범프 높이, 밀도 및 공간 분포의 영향을 고려해야 합니다. 따라서 이상적인 LZT 매체는 낮은 글라이드 높이(예: 0.5μ"(12nm))를 가능하게 하기 위해 낮은 범프 높이를 가져야 하지만 특정 범프 모양과 낮은 스틱션을 달성하기 위한 충분한 밀도를 가져야 합니다. 그러나 레이저 범프 밀도는 슬라이더 진동 및 디스크 슬라이더 충돌 가능성에 미치는 영향을 완화하도록 제어되어야 합니다(297단어).
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Seng Ghee TAN, Thomas LIEW, Teck Ee LOH, Teck Seng LOW, "Induced Slider Vibration over Various LZT Media at Small Disk-Slider Clearance --A Challenge to 0.5 µinch Glide Testing" in IEICE TRANSACTIONS on Electronics,
vol. E82-C, no. 12, pp. 2155-2164, December 1999, doi: .
Abstract: Both frequency- and time-domain analyses of glide signals from a PZT glide-slider flying over a laser zone-textured (LZT) thin film disk medium were used to determine the slider vibration at a small disk-slider clearance. Slider vibration was found to be particularly dependent on the uniformly placed laser bump and the effects due to the air-bearing stiffness over the LZT medium. We found that a high density of small, pointed laser bumps (10X) has a more distinct impact on airflow than large, jagged-rim craterlike laser bumps (1X) on the slider. We therefore investigated the effect of laser bump density on the slider vibration, and found that marginally higher laser bump density (3X versus 2X) results in higher slider vibration. While resonant vibration has been a major glide problem, the effects of laser bump density have also recently become important in the face of ultralow glide height, 0.5 µ" (12 nm). Its influence can be clearly observed when the disk-slider clearance becomes very small. At such an ultrasmall disk-slider clearance, even minimal slider vibration can be detrimental to the head-disk interface. Taking into account the various contributions of slider vibration and considering possible damage to the head-disk interface, it is clear that the optimization of laser bump design should go beyond just the glide height and coefficient of stiction. It should take into account the effects of laser bump height, density and spatial distribution on vibration-induced flying height variation while maintaining a low glide height and coefficient of stiction. An ideal LZT medium should therefore have low bump height to enable low glide height, i. e. , 0.5 µ" (12 nm), but specific bump shapes and sufficient density to achieve low stiction. Laser bump density should, however, be controlled to moderate its effect on slider vibration and possibly disk-slider collision (297 words).
URL: https://global.ieice.org/en_transactions/electronics/10.1587/e82-c_12_2155/_p
부
@ARTICLE{e82-c_12_2155,
author={Seng Ghee TAN, Thomas LIEW, Teck Ee LOH, Teck Seng LOW, },
journal={IEICE TRANSACTIONS on Electronics},
title={Induced Slider Vibration over Various LZT Media at Small Disk-Slider Clearance --A Challenge to 0.5 µinch Glide Testing},
year={1999},
volume={E82-C},
number={12},
pages={2155-2164},
abstract={Both frequency- and time-domain analyses of glide signals from a PZT glide-slider flying over a laser zone-textured (LZT) thin film disk medium were used to determine the slider vibration at a small disk-slider clearance. Slider vibration was found to be particularly dependent on the uniformly placed laser bump and the effects due to the air-bearing stiffness over the LZT medium. We found that a high density of small, pointed laser bumps (10X) has a more distinct impact on airflow than large, jagged-rim craterlike laser bumps (1X) on the slider. We therefore investigated the effect of laser bump density on the slider vibration, and found that marginally higher laser bump density (3X versus 2X) results in higher slider vibration. While resonant vibration has been a major glide problem, the effects of laser bump density have also recently become important in the face of ultralow glide height, 0.5 µ" (12 nm). Its influence can be clearly observed when the disk-slider clearance becomes very small. At such an ultrasmall disk-slider clearance, even minimal slider vibration can be detrimental to the head-disk interface. Taking into account the various contributions of slider vibration and considering possible damage to the head-disk interface, it is clear that the optimization of laser bump design should go beyond just the glide height and coefficient of stiction. It should take into account the effects of laser bump height, density and spatial distribution on vibration-induced flying height variation while maintaining a low glide height and coefficient of stiction. An ideal LZT medium should therefore have low bump height to enable low glide height, i. e. , 0.5 µ" (12 nm), but specific bump shapes and sufficient density to achieve low stiction. Laser bump density should, however, be controlled to moderate its effect on slider vibration and possibly disk-slider collision (297 words).},
keywords={},
doi={},
ISSN={},
month={December},}
부
TY - JOUR
TI - Induced Slider Vibration over Various LZT Media at Small Disk-Slider Clearance --A Challenge to 0.5 µinch Glide Testing
T2 - IEICE TRANSACTIONS on Electronics
SP - 2155
EP - 2164
AU - Seng Ghee TAN
AU - Thomas LIEW
AU - Teck Ee LOH
AU - Teck Seng LOW
PY - 1999
DO -
JO - IEICE TRANSACTIONS on Electronics
SN -
VL - E82-C
IS - 12
JA - IEICE TRANSACTIONS on Electronics
Y1 - December 1999
AB - Both frequency- and time-domain analyses of glide signals from a PZT glide-slider flying over a laser zone-textured (LZT) thin film disk medium were used to determine the slider vibration at a small disk-slider clearance. Slider vibration was found to be particularly dependent on the uniformly placed laser bump and the effects due to the air-bearing stiffness over the LZT medium. We found that a high density of small, pointed laser bumps (10X) has a more distinct impact on airflow than large, jagged-rim craterlike laser bumps (1X) on the slider. We therefore investigated the effect of laser bump density on the slider vibration, and found that marginally higher laser bump density (3X versus 2X) results in higher slider vibration. While resonant vibration has been a major glide problem, the effects of laser bump density have also recently become important in the face of ultralow glide height, 0.5 µ" (12 nm). Its influence can be clearly observed when the disk-slider clearance becomes very small. At such an ultrasmall disk-slider clearance, even minimal slider vibration can be detrimental to the head-disk interface. Taking into account the various contributions of slider vibration and considering possible damage to the head-disk interface, it is clear that the optimization of laser bump design should go beyond just the glide height and coefficient of stiction. It should take into account the effects of laser bump height, density and spatial distribution on vibration-induced flying height variation while maintaining a low glide height and coefficient of stiction. An ideal LZT medium should therefore have low bump height to enable low glide height, i. e. , 0.5 µ" (12 nm), but specific bump shapes and sufficient density to achieve low stiction. Laser bump density should, however, be controlled to moderate its effect on slider vibration and possibly disk-slider collision (297 words).
ER -