论文信息 - Magnetic switching volumes of CoSm thin films for high density longitudinal recording

Magnetic switching volumes of CoSm thin films for high density longitudinal recording

For a high density recording media, the magnetic switching volume is of great importance when considering media noise and thermal stability. CoSm/Cr films have been prepared and the influence of the Cr underlayer thickness and of the magnetic layer preparation conditions on the magnetic switching volume have been investigated through magnetic viscosity and remnance curve measurements. The measured switching volumes ranged from 3.0 to 15.2/spl times/10/sup 18/ cm/sup 3/, and implications regarding noise and thermal stability are discussed.

D. Sellmyer | Z. Shan | Y. Jeong | E. Singleton

[1] S. Liou,et al. Magnetic and structural properties of high coercivity nanocrystalline CoSm films with in-plane anisotropy , 1995 .

[2] M. Sharrock,et al. Time dependence of switching fields in magnetic recording media (invited) , 1994 .

[3] S. Liou,et al. Nanostructures of Sm-Co on Cr thin films , 1994 .

[4] P. Russell,et al. AFM structure and media noise of SmCo/Cr thin films and hard disks , 1994 .

[5] David N. Lambeth,et al. High density recording on CoSm/Cr thin film media , 1992, 1992. Digests of Intermag. International Magnetics Conference.

[6] D. Lambeth,et al. CoSm‐based high‐coercivity thin films for longitudinal recording , 1991 .

[7] E. Wohlfarth. The coefficient of magnetic viscosity , 1984 .

[8] Louis Néel,et al. Théorie du traînage magnétique des substances massives dans le domaine de Rayleigh , 1950 .

[9] R. Street,et al. A Study of Magnetic Viscosity , 1949 .

[10] M. Sharrock,et al. Time-dependent magnetic phenomena and particle-size effects in recording media , 1990 .

[11] D. Givord,et al. Experimental approach to coercivity analysis in hard magnetic materials , 1990 .