Title :
Micromagnetic Modeling Study of Thermal Gradient Effect in Heat-Assisted Magnetic Recording (HAMR)
Author :
Torabi, Adam F. ; Van Ek, J. ; Champion, Eric ; Wang, James
Author_Institution :
Western Digital Corp., San Jose, CA, USA
Abstract :
The performance of heat assisted magnetic recording (HAMR) is simulated using a multilayer micromagnetic model. Recording performance parameters such as signal-to-noise ratio (SNR) were simulated as a function of the vertical thermal gradient in the recording media. Simulation results show that the vertical thermal gradient in the media has to be higher than ( -28 deg/nm) in order to have no loss of SNR based on parameters used in the model. Curie temperature writing is also necessary in order to maximize the SNR.
Keywords :
Curie temperature; magnetic heads; magnetic multilayers; magnetic recording; micromagnetics; Curie temperature; HAMR; SNR; heat-assisted magnetic recording; monopole head; multilayer micromagnetic modeling; signal-to-noise ratio; thermal gradient effect; Heat-assisted magnetic recording (HAMR); micromagnetic modeling; thermal gradients;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2009.2023877
