Title :
Modeling of lamination effects for thin-film inductive heads
Author :
Zhu, Jun ; Petty, Gary
Author_Institution :
READ-RITE Corp., Milpitas, CA, USA
fDate :
9/1/1996 12:00:00 AM
Abstract :
The impedance, efficiency, and current and field risetime for laminated heads have been calculated, and the results are compared with experimental data. The experiments show that laminated heads perform better than non-laminated heads in isolated pulse amplitude and overwrite at high frequencies under identical test conditions; however, the laminated heads do not show improved performance in PW50 and nonlinear transition shift (NLTS) under our test conditions
Keywords :
Permalloy; eddy current losses; eddy currents; laminations; magnetic heads; magnetic multilayers; magnetic permeability; magnetic thin film devices; soft magnetic materials; PW50; complex permeability approach; current risetime; eddy currents; efficiency; field risetime; high frequencies; impedance; isolated pulse amplitude; lamination effects modeling; nonlinear transition shift; overwrite; permalloy layers; test conditions; thin-film inductive heads; Eddy currents; Frequency; Impedance measurement; Laminates; Lamination; Magnetic fields; Magnetic heads; Performance evaluation; Testing; Transistors;
Journal_Title :
Magnetics, IEEE Transactions on
