Contact of flying recording head sliders on continuous and patterned media

Author

Jia-Yang Juang ; Kuan-Te Lin

Author_Institution

Nat. Taiwan Univ., Taipei, Taiwan

fYear

2012

fDate

Oct. 31 2012-Nov. 2 2012

Firstpage

1

Lastpage

2

Abstract

We conduct three-dimensional transient finite-element analysis to study the contact behavior during touch-down detection by a thermal flying-height control (TFC) recording head on continuous and patterned media. The heat generated during touch-down and the plastic strain of the media are calculated in the model. Various factors and parameters are investigated, such as the radius of curvature of the TFC protrusion, disk velocity, media substrate, media compositions and bit-patterned media (BPM). Our analysis shows that when subjected to the same TFC over-push, BPM is much more likely to result in plastic deformation than the continuous media. The temperature rises due to frictional heating reach 22 K and 16 K on continuous and BPM media, respectively.

Keywords

electrical contacts; finite element analysis; storage media; 3D transient finite element analysis; BPM media; TFC over push; TFC protrusion; bit patterned media; contact behavior; continuous media; disk velocity; flying recording head sliders; frictional heating; media compositions; media substrate; plastic deformation; thermal flying height control recording head; touch down detection; Finite element methods; Heating; Magnetic analysis; Magnetic recording; Media; Plastics; Transient analysis; Magnetic recording; head-disk interface (HDI); patterned media; thermal flying-height control (TFC);

fLanguage

English

Publisher

ieee

Conference_Titel

APMRC, 2012 Digest

Conference_Location

Singapore

Print_ISBN

978-1-4673-4734-1

Type

conf

Filename

6407550