NDLI: Air bearing dynamic stability on bit patterned media disks

Content Provider	Springer Nature Link
Author	Li, Liping Bogy, David B.
Copyright Year	2013
Abstract	Bit Patterned media (BPM) recording is one of the potential technologies to be used in future disk drives in order to increase the areal density to 5 Tbit/in2. But one of the main obstacles for BPM is to achieve dynamic stability of the air bearing slider at the head-disk interface (HDI). In this paper we first use a direct simulation method to check the accuracy of our previously developed Homogenization Reynolds equation solution. After confirming the accuracy it is then implemented to study the slider’s flying attitude on BPM disks. Then we investigate the system’s parameters using a system identification method by simultaneously solving the equations of motion of the slider and the Homogenization Reynolds equation. We observe that the first pitch mode frequency of the air bearing increases with increase of pattern groove area ratio and pattern height. And the stiffness decreases when the pattern groove area ratio or pattern height increases. We conclude that a partially planarized BPM is preferred in order to maintain the dynamic stability of the HDI.
Starting Page	1401
Ending Page	1406
Page Count	6
File Format	PDF
ISSN	09467076
Journal	Microsystem Technologies
Volume Number	19
Issue Number	9-10
e-ISSN	14321858
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2013-06-02
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Electronics and Microelectronics, Instrumentation Nanotechnology Mechanical Engineering
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering Hardware and Architecture

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