Experimental study of dual heater slider touchdown detectability

  • Dapeng Zhao
  • , Xiongfei Wei
  • , Yu Wang
  • , Bin Liu
  • , Shengxiang Chen
  • , Zhaoqing Xu

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

With the increase of areal density in hard disk drive (HDD), the mechanical spacing between magnetic head and disk has decreased to sub~1nm. Under such low spacing, accurate spacing control becomes more important for mitigating the risk of head-disk interference and getting good bit per inch (BPI) performance. Dual-heater slider technology has been considered as a most useful solution. This paper introduces the advantages of dual heater in reading/writing mode. To utilize these advantages, precise spacing control with good touchdown detectability is necessary. Therefore, the touchdown detectability of dual-heater slider was investigated using three TD detection methods under writing and reading mode. Result shows that a single method is difficult to get the best TD detectability under both writing and reading mode. Hybrid method may be a feasible solution.

Original languageEnglish
Title of host publicationInnovation for Applied Science and Technology
Pages468-472
Number of pages5
DOIs
StatePublished - 2013
Externally publishedYes
Event2nd International Conference on Engineering and Technology Innovation 2012, ICETI 2012 - Kaohsiung, Taiwan, Province of China
Duration: 2 Nov 20126 Nov 2012

Publication series

NameApplied Mechanics and Materials
Volume284-287
ISSN (Print)1660-9336
ISSN (Electronic)1662-7482

Conference

Conference2nd International Conference on Engineering and Technology Innovation 2012, ICETI 2012
Country/TerritoryTaiwan, Province of China
CityKaohsiung
Period2/11/126/11/12

Keywords

  • Detectability
  • Dual heater
  • Slider
  • Touchdown

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