It is also a vital component of high-voltage wires, magnetic coatings for high-density hard disk drives, fiber optics, fiberglass, catalytic converters and spark plugs.
The conference included many papers on various aspects and issues in energy assisted magnetic recording (HAMR is one version of this) as well as a technology called shingled magnetic recording where magnetic recorded tracks are written offset from each other giving a higher track density and thus more storage capacity.