I summarize what is currently known about how thermal effects limit the storage capacity of magnetic disk drives. The physics of thermal fluctuations in magnetic materials is treated in some detail, though the essential points are covered in a tutorial manner.
Frontiers of Engineering: Reports on Leading-Edge
The National Academies Press, Washington, DC
anisotropy, Arrhenius-Neel, disk drives, magnetic data storage, magnetic fluctuation noise, superparamagnetism