Channel response of HAMR with linear temperature-dependent coercivity and remanent magnetization

Author

Wongsathan, Rati ; Supnithi, Pornchai

Author_Institution

Fac. of Eng., King Mongkut´´s Inst. of Technol. Ladkrabang, Bangkok, Thailand

fYear

2012

fDate

16-18 May 2012

Firstpage

1

Lastpage

4

Abstract

In this work, we derive the Thermal-Williams-Comstock model for the heat-assisted magnetic recording channels. The coercivity and remanent magnetization have linear relationship with the temperature. The transition width and transition centres can be obtained for various cases. Together with the microtrack model, the generation of transition response, dibit response as well as the readback of pseudorandom sequence with and without jitter noise can be achieved.

Keywords

coercive force; jitter; magnetic recording; remanence; HAMR; Thermal-Williams-Comstock model; channel response; dibit response; heat assisted magnetic recording channel; jitter noise; linear temperature dependent coercivity; microtrack model; pseudorandom sequence; remanent magnetization; transition centre; transition width; Approximation methods; Coercive force; Computational modeling; Heat-assisted magnetic recording; Laser transitions; Magnetization; channel model; heat-assisted magnetic recording; transition response;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON), 2012 9th International Conference on

Conference_Location

Phetchaburi

Print_ISBN

978-1-4673-2026-9

Type

conf

DOI

10.1109/ECTICon.2012.6254164

Filename

6254164