  The interesting physics and potential memory technologies resulting from
topologically protected spin textures such as skyrmions, has prompted efforts
to discover new material systems that can host these kind of magnetic
structures. Here we use the highly tunable magnetic properties of amorphous
Fe/Gd multilayer films to explore the magnetic properties that lead to
dipole-stabilized skyrmions and skyrmion lattices that form from the
competition of dipolar field and exchange energy. Using both real space imaging
and reciprocal space scattering techniques we determined the range of material
properties and magnetic fields where skyrmions form. Micromagnetic modeling
closely matches our observation of small skyrmion features (~50 to 70nm) and
suggests these class of skyrmions have a rich domain structure that is Bloch
like in the center of the film and more N\'eel like towards each surface. Our
results provide a pathway to engineer the formation and controllability of
dipole skyrmion phases in a thin film geometry at different temperatures and
magnetic fields.
