  Exchange-coupling between soft- and hard-magnetic phases plays an important
role in the engineering of novel magnetic materials. To achieve exchange
coupling, a two-phase microstructure is necessary. This interface effect is
further enhanced if both phase dimensions are reduced to the nanometer scale.
At the same time, it is challenging to obtain large sample dimensions. In this
study, powder blends and ball-milled powder blends of Fe-SmCo$_{5}$ are
consolidated and are deformed by high-pressure torsion (HPT), as this technique
allows us to produce bulk magnetic materials of reasonable sizes. Additionally,
the effect of severe deformation by ball-milling and severe plastic deformation
by HPT on exchange coupling in Fe-SmCo$_{5}$ composites is investigated. Due to
the applied shear deformation, it is possible to obtain a texture in both
phases, resulting in an anisotropic magnetic behavior and an improved magnetic
performance.
