DocumentCode
2168709
Title
Experimental effects of laser power on the writability and PW50 in a heat assisted longitudinal recording system
Author
Rausch, T. ; Bain, J.A. ; Stancil, D.D. ; Schlesinger, T.E. ; Challener, William A. ; McDaniel, T. ; Deeman, N. ; Brucker, C.
Author_Institution
Data Storage Syst. Center, Carnegie Mellon Univ., Pittsburgh, PA, USA
fYear
2002
fDate
2002
Firstpage
162
Lastpage
164
Abstract
In a heat assisted magnetic recording (HAMR) system, light from a laser diode is used to heat the medium which assists in the recording process by temporarily reducing the coercivity during writing. The recorded marks are read back using a magnetoresistive (MR) sensor that senses the stray flux from a magnetic transition. In this paper we examine the effects of the laser power on the writability and the pulse width at half maximum (PW50) for granular longitudinal media.
Keywords
coercive force; granular materials; heating; laser beam effects; magnetic heads; magnetic transitions; magnetoresistive devices; thermomagnetic recording; MR sensor; coercivity reduction; granular longitudinal media; heat assisted longitudinal recording system; heat assisted magnetic recording system; laser diode heating; laser power effects; magnetic transition stray flux; magnetoresistive sensor; pulse width at half maximum; recorded mark read-back; recording process; writability; Coercive force; Diode lasers; Heat-assisted magnetic recording; Laser transitions; Magnetic flux; Magnetic recording; Magnetic sensors; Magnetoresistance; Power lasers; Writing;
fLanguage
English
Publisher
ieee
Conference_Titel
Optical Memory and Optical Data Storage Topical Meeting, 2002. International Symposium on
Print_ISBN
0-7803-7379-0
Type
conf
DOI
10.1109/OMODS.2002.1028601
Filename
1028601
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