DocumentCode :
27163
Title :
Kinetic Monte Carlo Simulations of 
Loops for HAMR Recording Media: Comparison With MOKE Data
Author :
Plumer, M.L. ; Fal, T.J. ; Mercer, J.I. ; Whitehead, J.P. ; Van Ek, J. ; Ajan, Antony
Author_Institution :
Dept. of Phys. & Phys. Oceanogr., Memorial Univ. of Newfoundland, St. John´s, NL, Canada
Volume :
50
Issue :
3
fYear :
2014
fDate :
Mar-14
Firstpage :
22
Lastpage :
26
Abstract :
Our previously developed kinetic Monte Carlo algorithm is used to simulate M-H loops of high anisotropy magnetic recording media at long time scales relevant to the experimental measurements using the magneto-optic Kerr effect. Micromagnetic parameters are fit to loop data taken at 300 K and at a sweep rate of 700 Oe/s on a single-layer media developed for heat-assisted magnetic recording. Significantly different fitted parameters result from standard micromagnetic simulations that can access only sweep rates many orders of magnitude faster. Sensitivities of the loops to anisotropy, saturation magnetization, and various distributions are reported.
Keywords :
Kerr magneto-optical effect; Monte Carlo methods; anisotropic media; magnetic anisotropy; magnetic recording; micromagnetics; sensitivity; HAMR recording media; M-H loops; MOKE data; heat-assisted magnetic recording; high anisotropy magnetic recording media; kinetic Monte Carlo simulations; magnetooptic Kerr effect; saturation magnetization; sensitivities; single-layer media; standard micromagnetic simulations; temperature 300 K; time scales; Anisotropic magnetoresistance; Grain size; Heat-assisted magnetic recording; Magnetic anisotropy; Media; Saturation magnetization; Heat-assisted magnetic recording (HAMR); hysteresis loops; kinetic MC (KMC);
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/TMAG.2013.2283659
Filename :
6612685
Link To Document :
