Title :
Correlation of Signal and SNR Thermal Decay
Author :
Valcu, Bogdan ; Brockie, Richard ; Yeh, Nan-Hsiung ; Richter, H.J.
Author_Institution :
Seagate Technol., Fremont, CA
fDate :
6/1/2007 12:00:00 AM
Abstract :
Media thermal stability is characterized by using spin-stand tests for both signal and signal-to-noise ratio (SNR) decay. Agreement is shown between vibrating sample magnetometer (VSM) and spin-stand evaluations of the thermal decay rate dependence on linear density. For an equalized system, there is linear correlation between measured SNR and signal decay rates. Equalization to targets with DC content will result in higher decay
Keywords :
hard discs; magnetic recording noise; thermal stability; SNR thermal decay; VSM; linear density; media thermal stability; signal to noise ratio; spin stand tests; vibrating sample magnetometry; Frequency; Magnetic noise; Magnetization; Noise shaping; Perpendicular magnetic recording; Signal to noise ratio; Temperature; Thermal factors; Thermal stability; Time measurement; Equalization; perpendicular recording; thermal decay;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2007.892860
