Temperature distribution effects on the magnetization switching in FePt single domain particles

Author

Tang, K. ; Zhang, H. ; Tang, X. ; Wen, Q. ; Zhong, Z.

Author_Institution

Univ. of Electron. Sci. & Technol. of China, Chengdu

fYear

2006

fDate

8-12 May 2006

Firstpage

465

Lastpage

465

Abstract

In this paper heat assisted magnetic recording (HAMR) is introduced. FePt single domain particles are heated by laser, and has a certain distribution, for example, a Gaussian distribution in xy plane. Monte Carlo simulation is performed on the effect of the temperature distribution in particles on the magnetisation switching. Two nucleation modes in the simulation, indicating the important effect of temperature distribution on the magnetization reversal process is observed. An inverse proportion relationship between the lifetime tau and the parameter sigma in Gaussian distribution of the temperature is also determined numerically.

Keywords

Gaussian distribution; Monte Carlo methods; iron alloys; magnetic particles; magnetic switching; magnetisation reversal; nucleation; platinum alloys; FePt; Gaussian distribution; Monte Carlo simulation; heat assisted magnetic recording; magnetization reversal; magnetization switching; nucleation modes; Anisotropic magnetoresistance; Gaussian distribution; Heat-assisted magnetic recording; Magnetic fields; Magnetic materials; Magnetic switching; Magnetization; Solids; Temperature dependence; Temperature distribution;

fLanguage

English

Publisher

ieee

Conference_Titel

Magnetics Conference, 2006. INTERMAG 2006. IEEE International

Conference_Location

San Diego, CA

Print_ISBN

1-4244-1479-2

Type

conf

DOI

10.1109/INTMAG.2006.376189

Filename

4261898