  Recent progress in nanofabrication and additive manufacturing have
facilitated the building of nanometer-scale three-dimensional structures, that
promise to lead to an emergence of new functionalities within a number of
fields, compared to state-of-the-art two dimensional systems. In magnetism, the
move to three-dimensional systems offers the possibility for novel magnetic
properties not available in planar systems, as well as enhanced performance,
both of which are key for the development of new technological applications. In
this review paper we will focus our attention on three-dimensional magnetic
systems and how their magnetic configuration can be retrieved using X-ray
magnetic nanotomography.
