TY - JOUR
T1 - Lowering aspect ratio of patterned islands to achieve ultrahigh storage densities
AU - Helian, Na
AU - Wang, Frank
AU - Clegg, Warwick
PY - 2001/8/1
Y1 - 2001/8/1
N2 - Patterned islands with high aspect ratio are easier to form single domain state due to the shape anisotropy. However, simply increasing the aspect ratio would not be an ideal way in a single-bit-per-island recording system because achieving ultrahigh storage densities and high data transfer rate will rely on being able to make narrower elements, with a lower aspect ratio, as close together as possible. In this work, it is found that a magnetocrystalline anisotropy down track oriented medium with narrow anisotropy angular distribution is preferred for patterned polycrystalline cobalt islands to form a uniform single domain demagnetized state with smaller aspect ratio than one with broad anisotropy angular distribution.
AB - Patterned islands with high aspect ratio are easier to form single domain state due to the shape anisotropy. However, simply increasing the aspect ratio would not be an ideal way in a single-bit-per-island recording system because achieving ultrahigh storage densities and high data transfer rate will rely on being able to make narrower elements, with a lower aspect ratio, as close together as possible. In this work, it is found that a magnetocrystalline anisotropy down track oriented medium with narrow anisotropy angular distribution is preferred for patterned polycrystalline cobalt islands to form a uniform single domain demagnetized state with smaller aspect ratio than one with broad anisotropy angular distribution.
UR - https://www.sciencedirect.com/science/article/pii/S0304885301001949
U2 - 10.1016/S0304-8853(01)00194-9
DO - 10.1016/S0304-8853(01)00194-9
M3 - Article
SN - 0304-8853
VL - 233
SP - 305
EP - 310
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
IS - 3
ER -