Kinetic Monte Carlo Simulations of $M\!\!-\!\!H$ Loops for HAMR Recording Media: Comparison With MOKE Data

Autor:	J. P. Whitehead, Timothy J. Fal, Martin L. Plumer, Antony Ajan, J. I. Mercer, Jan van Ek
Rok vydání:	2014
Předmět:	Physics Magnetic anisotropy Kerr effect Condensed matter physics Heat-assisted magnetic recording Orders of magnitude (temperature) Monte Carlo method Kinetic Monte Carlo Electrical and Electronic Engineering Anisotropy Micromagnetics Electronic Optical and Magnetic Materials
Zdroj:	IEEE Transactions on Magnetics. 50:22-26
ISSN:	1941-0069 0018-9464
DOI:	10.1109/tmag.2013.2283659
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::7be33dd150ee05eea4b9f3b8083a8a22 https://doi.org/10.1109/tmag.2013.2283659 Zobrazit plný text záznamu