Title :
Local optimization for simulating hysteretic behavior of exchange coupled magnetic systems
Author :
Sun, M. ; Fujiwara, H. ; Zhang, K. ; Zhao, T.
Author_Institution :
Alabama Univ., AL, USA
Abstract :
We discuss several kinds of local optimization methods for simulating hysteretic behavior of magnetic systems. Through minimization of system total free energy over local domains by such techniques, quasi-static magnetization curves and torque curves can be captured. This approach can be applied to exchange coupled multilayer thin films used in GMR read heads for ultrahigh density magnetic data storage
Keywords :
exchange interactions (electron); free energy; genetic algorithms; giant magnetoresistance; magnetic anisotropy; magnetic heads; magnetic hysteresis; magnetic multilayers; minimisation; nonlinear programming; simulated annealing; exchange coupled magnetic systems; genetic algorithms; giant magnetoresistance read heads; hysteretic behavior simulation; local domains; local grid search; local optimization methods; multilayer thin films; nonlinear programming; quasistatic magnetization curves; simulated annealing; torque curves; total free energy minimization; ultrahigh density magnetic data storage; Couplings; Energy capture; Magnetic domains; Magnetic films; Magnetic heads; Magnetic hysteresis; Magnetic multilayers; Magnetization; Optimization methods; Torque;
Conference_Titel :
System Theory, 2001. Proceedings of the 33rd Southeastern Symposium on
Conference_Location :
Athens, OH
Print_ISBN :
0-7803-6661-1
DOI :
10.1109/SSST.2001.918515
