Title :
Correlation of thermal stability and signal-to-noise ratio of thin film recording media
Author :
Arnoldussen, T.C. ; Mirzamaani, M. ; Doerner, M. ; Tang, K. ; Bian, X. ; Feng, J. ; Gatherwright, M.
Author_Institution :
SSD, IBM Corp., San Jose, CA, USA
Abstract :
The thermal stability of data stored in thin film recording media is closely tied to signal-to-noise ratio (SNR), yet is not correlated in a simple way. Indeed grain size strongly affects both SNR and thermal stability, but macroscopic magnetic properties as well as recording conditions are equally influential. This is illustrated by measurements of SNR and signal thermal decay along with a simple model analysis. Dependence of areal density on key magnetic properties, under SNR and stability constraints, is formulated.
Keywords :
grain size; magnetic recording noise; magnetic thin films; thermal stability; SNR constraints; areal density dependence; grain size; macroscopic magnetic properties; model analysis; recording conditions; signal thermal decay; signal-to-noise ratio; stability constraints; thermal stability; thin film recording media; Background noise; Grain size; Magnetic films; Magnetic properties; Magnetic recording; Pulse measurements; Signal to noise ratio; Space vector pulse width modulation; Thermal stability; Transistors;
Journal_Title :
Magnetics, IEEE Transactions on
