Title :
Skew angle and off-track capability of near contact recording systems
Author :
Hu, Sheng-Bin ; Liu, Bo ; Low, Teck-Seng
Author_Institution :
Magnetics Technol. Centre, Nat. Univ. of Singapore, Singapore
fDate :
9/1/1996 12:00:00 AM
Abstract :
Various sliders for near-contact recording systems have begun to appear in high areal density disk drives. In this paper, systematic investigations were conducted to evaluate the effects of skew angle on off-track capability of near-contact recording systems. Tri-pad sliders were used in the investigations. The spacings between read/write elements and disk surface were in the range of 0.6~1.2 μin. The off-track capability is reduced and the noise level of residual signal after overwriting is increased, when skew angle is increased. A large skew angle also makes the off-track capability asymmetric and sensitive to off-track direction. However, increased skew angle reduces the track-to-track interference in the writing operation
Keywords :
dynamic testing; interference (signal); magnetic heads; magnetic recording; magnetic recording noise; 6E-7 to 1.2E-6 inch; bit-shift profile; dynamic flying height tester; head disk spacing; high areal density disk drives; near contact recording systems; off-track capability; off-track direction sensitivity; overwriting; read/write elements disk surface spacing; residual signal noise level; skew angle; track-to-track interference; tri-pad sliders; twin-peak profile; writing operation; Disk drives; Disk recording; Interference; Magnetic heads; Magnetic recording; Noise level; Pneumatic actuators; Target tracking; Testing; Writing;
Journal_Title :
Magnetics, IEEE Transactions on
