Title :
Read response of a GMR sensor investigated with a micromagnetic model
Author :
Ono, Hiroka ; Sakurai, Masaki ; Yoshida, Kazuetsu
Author_Institution :
Dept. of Electron. Eng., Kogakuin Univ., Tokyo, Japan
Abstract :
The read response of a giant magnetoresistive (GMR) sensor was calculated using a micromagnetic model taking into account the full interaction between a GMR sensor and a double-layered medium. The simulated results showed that the magnetic interaction between the sensor and the recording medium scarcely influenced the signal waveforms and the roll-off properties. The comparison of the isolated waveform and the roll-off with those obtained from the modified Fan´s equation suggested that there is a nonlinearity in the read process of a GMR sensor.
Keywords :
giant magnetoresistance; magnetic heads; magnetic sensors; micromagnetics; perpendicular magnetic recording; GMR head; GMR sensor; double-layered medium; giant magnetoresistive head; giant magnetoresistive sensor; magnetic interaction; micromagnetic model; modified Fan equation; perpendicular magnetic recording; read process; read response; roll-off property; signal waveform; soft under layer; Giant magnetoresistance; Magnetic analysis; Magnetic heads; Magnetic properties; Magnetic recording; Magnetic sensors; Magnetostatic waves; Micromagnetics; Nonlinear equations; Perpendicular magnetic recording; Giant magnetoresistive (GMR) head; micromagnetic model; perpendicular magnetic recording; roll-off properties; soft under layer;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2005.855316
