Title :
Micromagnetic Modeling of Recording on Discrete Track Perpendicular Media
Author :
Zhong, L. ; Jin, Z. ; Zhou, Y. ; Fernandez-de-Castro, J.
Author_Institution :
Seagate Technol., Bloomington
Abstract :
The SNR performance of DTM is evaluated through micromagnetic simulation. The benefits of recording on DTM are discussed and compared to conventional media. In the micromagnetic model, the thin film media is approximated by the Voronoi-shaped three-dimensional array of grains. The anisotropy axis of each grain, oriented perpendicular to the thin film plane, is chosen to have a Gaussian distribution. The signal to media noise ratio (SMNR) and signal to electronic noise ratio (SENR) are calculated based on the signal and noise at the sampling points. The SMNR and SENR are used to calculate the total SNR.
Keywords :
Gaussian distribution; magnetic anisotropy; magnetic noise; magnetic thin film devices; micromagnetics; perpendicular magnetic recording; Gaussian distribution; Voronoi-shaped three-dimensional array; anisotropy axis; discrete track perpendicular media; magnetic recording; micromagnetic modeling; sampling points; signal-electronic noise ratio; signal-noise ratio; thin film media; Disk recording; Magnetic heads; Magnetic noise; Magnetic recording; Manufacturing; Micromagnetics; Noise reduction; Perpendicular magnetic recording; Signal to noise ratio; Transistors;
Conference_Titel :
Magnetics Conference, 2006. INTERMAG 2006. IEEE International
Conference_Location :
San Diego, CA
Print_ISBN :
1-4244-1479-2
DOI :
10.1109/INTMAG.2006.376205
