Designing Stable Periodic Magnetization Textures by Tailoring Anisotropies and Applying Geometrical Transformation

Tailoring ferroic textures and stray field landscapes is central to many magnetic functionalities. However, creating complex textures by design remains very challenging. Here, we present a simple and versatile strategy to create a wide range of periodic magnetic textures by application of a homogeneous magnetic field and a geometrical transformation of a 2D film into a rolled‐up 3D architecture and back. The magnetization configuration imprinted in the 3D state is determined by the magnetic anisotropy of the material and its local orientation with respect to the field axis. Upon transforming the film back to the 2D state, the angular magnetization configuration encoded in the 3D state is converted into a spatially periodic magnetic pattern. Using this technique, we have realized distinct periodic magnetization patterns in 2D, such as up‐down magnetization patterns in an out‐of‐plane exchange‐bias material, head‐to‐head/tail‐to‐tail configurations in in‐plane exchange‐bias materials, and spin‐spiral‐like magnetization patterns in an isotropic exchange‐bias material. To create the spin‐spiral pattern, we have developed an isotropic exchange‐biased material system, in which magnetization can be stabilized with remanence to saturation ratio ( m r / m s ) ≈ 0.9 along any chosen axis by magnetic annealing. The spin‐spiral‐like magnetization pattern created through this technique is inaccessible through alternative domain patterning techniques.