Stability of transverse and longitudinal bit in patterned media

The stability of the transverse and the longitudinal bit is studied by usin g Landau-Lifshitz-Gilbert (LLG) equation from initial magnetization state o f ideal bit array. Relaxed magnetization states are calculated for the tran sverse and the longitudinal bit in the conventional media and in the patter ned media with various anisotropic energies and saturation magnetizations. The bit in the patterned media is more stable than that in the conventional media at low anisotropic energy. The transverse bit in the patterned media is stable even at low anisotropic energies less than about 8x10(5) erg/cm( 3). The shape anisotropy of the patterned media stabilizes the microscopic bit. The patterned media is hopeful for high-density magnetic recording. (C ) 2001 Elsevier Science BN. All rights reserved.