Title :
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
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;
Conference_Titel :
Magnetics Conference, 2006. INTERMAG 2006. IEEE International
Conference_Location :
San Diego, CA
Print_ISBN :
1-4244-1479-2
DOI :
10.1109/INTMAG.2006.376189
