Title :
Effect of exchange interaction on R/W properties of single layer perpendicular recording media
Author :
Uesaka, Y. ; Endo, H. ; Nakatani, Y. ; Hayashi, N. ; Fukushima, H.
Author_Institution :
Nihon Univ., Fukushima, Japan
Abstract :
Summary form only given. It has been reported (by Uesaka et al. (1999) and Matsumoto et al. (2000)) that a suitable exchange interaction between grains increases the signal and decreases the noise of single layer perpendicular recording media. The effects of anisotropy field, easy axis distribution and recording density to increase SNR (signal to noise ratio) with increasing exchange interaction were investigated. The material parameters used for the calculation were as follows: H/sub k/=10, 7.5, 5 kOe, standard deviation of the easy axis distribution=1 and 10 degrees, height of the media=20 nm, grain size=10 nm and Ms=400 emu/cm/sup 3/.
Keywords :
exchange interactions (electron); magnetic recording noise; perpendicular magnetic anisotropy; perpendicular magnetic recording; 10 nm; 20 nm; SNR; anisotropy field; easy axis distribution; exchange interaction; magnetic recording noise; read/write properties; recording density; signal to noise ratio; single layer perpendicular recording media; Anisotropic magnetoresistance; Computational modeling; Elementary particle exchange interactions; Grain size; Magnetic materials; Magnetostatics; Perpendicular magnetic recording; Saturation magnetization; Signal to noise ratio; Thermal stability;
Conference_Titel :
Magnetics Conference, 2002. INTERMAG Europe 2002. Digest of Technical Papers. 2002 IEEE International
Conference_Location :
Amsterdam, The Netherlands
Print_ISBN :
0-7803-7365-0
DOI :
10.1109/INTMAG.2002.1001154
