Modeling and simulation of hard-particle interaction in head/disk interfaces

Autor:	Remmelt Pit, Qinghua Zeng, Robert N. Payne, Fu-Ying Huang, Peter Michael Baumgart
Rok vydání:	2005
Předmět:	Work (thermodynamics) Materials science Monte Carlo method Mechanics Physics::Geophysics Electronic Optical and Magnetic Materials Modeling and simulation Scratch Slider Head (vessel) Particle Electrical and Electronic Engineering computer Parametric statistics computer.programming_language
Zdroj:	IEEE Transactions on Magnetics. 41:604-609
ISSN:	1941-0069 0018-9464
DOI:	10.1109/tmag.2004.838063
Popis:	A hard particle interacting with a slider and a disk in the head/disk interface of hard-disk drives can produce a scratch on the disk and result in data loss. Our work emphasizes modeling and simulation of slider, particle, and disk interactions, scratch generating mechanisms, and linking of scratch to interface design parameters. Two models are presented. The Monte Carlo method was used to calculate scratch probabilities and parametric studies were performed to determine the effect on scratch probability of various parameters, such as friction coefficients, particle mean size, slider wall angles, the ion-milling (IM) etch depth from the air-bearing surface (ABS) of the slider, and the efficacy of additional ABS structures acting as particle shields. Simulation results show that the friction coefficient is a dominant parameter. If the disk friction coefficient is smaller than the slider friction coefficient, scratches are not produced. Using shallow IM depths is an effective and practical way to reduce the scratch probability. Experimental results are very close to the simulation predictions.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9d779b0c9cdfa1f86f8090612ff41d85 https://doi.org/10.1109/tmag.2004.838063 Zobrazit plný text záznamu