HAMR Performance and Integration Challenges

Author

Rea, Chris ; Holfeld, Julius ; Kalarickal, Sangita ; Benakli, Mourad ; Sam, Alfredo ; Olson, H. ; Hua Zhou ; Saunders, D. ; Gokemeijer, Nils ; Seigler, Mike ; Kai-Zhong Gao ; Rausch, Tim ; Dykes, John W. ; Wu, Aimin ; Thiele, Jan-Ulrich ; Ganping Ju ; Gag

Author_Institution

Recording Head Oper., Seagate Technol., Bloomington, MN, USA

Volume

50

Issue

3

fYear

2014

fDate

Mar-14

Firstpage

62

Lastpage

66

Abstract

Heat-assisted magnetic recording (HAMR) is a fast evolving technology, and has been established as the next enabler of higher areal density in magnetic recording. After achieving high areal density capability, HAMR drive integration was recently demonstrated. In this paper, we discuss some of the recent learning from component performance and drive integration. We identify a key challenge in HAMR integration: erasure due to thermal background heating. The background heating was introduced to improve near-field transducer reliability and reduce laser power requirement. We present experimental and modeling data on the impact of thermal background, both in the cross-track (adjacent-track erasure) and down-track (self-erasure) dimensions.

Keywords

magnetic recording; magnetic sensors; reliability; transducers; HAMR drive integration; adjacent-track erasure dimension; cross-track dimension; down-track dimension; heat-assisted magnetic recording; high areal density capability; laser power requirement reduction; near-field transducer reliability; self-erasure dimension; thermal background heating; Heat sinks; Heat-assisted magnetic recording; Laser modes; Magnetic heads; Media; Power lasers; Drive integration; Multiple Adjacent Track Interference (MATI); erasure; heat-assisted magnetic recording (HAMR);

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2013.2287886

Filename

6774942