Affects of skew angle on the written-in base line shift (BLS) signal at high track densities
- Resource Type
- Periodical
- Authors
- Chang, T.; Salo, M.; Fang, H.; Madison, M.; Jian-Gang Zhu; Arnoldussen, T.
- Source
- IEEE Transactions on Magnetics IEEE Trans. Magn. Magnetics, IEEE Transactions on. 32(5):3395-3397 Sep, 1996
- Subject
- Fields, Waves and Electromagnetics
Magnetic heads
Magnetic field measurement
Frequency
Current measurement
Charge measurement
Finite element methods
Micromagnetics
Position measurement
Goniometers
Magnetoresistance
- Language
- ISSN
- 0018-9464
1941-0069
The track edge charge distribution responsible for the base line shift (BLS) in the MR readback waveform is studied through skew angle measurements. A model based on a finite element head field calculation and micromagnetic simulation is utilized to understand the track edge charge formation responsible for the BLS signal. The modeling results show that the spatial distribution of the dipole charge profile in the cross track direction becomes asymmetric when transitions are written at skew angles. This explains the observed asymmetry in the measured base line shift profile.