Stability of transverse and longitudinal bit in patterned media

Abstract The stability of the transverse and the longitudinal bit is studied by using Landau–Lifshitz–Gilbert (LLG) equation from initial magnetization state of ideal bit array. Relaxed magnetization states are calculated for the transverse and the longitudinal bit in the conventional media and in the patterned 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 8×10 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.