Massimo Ghidini

Abstract The elastic degree of freedom is widely exploited to mediate magnetoelectric coupling between ferromagnetic films and ferroelectric substrates. For epitaxial Fe films grown on clean BaTiO3 substrates, shear strain can determine the underlying magnetoelastic coupling. Here, we use PhotoEmission Electron Microscopy of ferroic Fe and BaTiO3 domains, combined with micromagnetic simulations, to directly reveal an inverted interfacial magnetoelastic coupling in the low-dimensional limit.

Introduction Click to copy section linkSection link copied! The recent discovery of long-range magnetic order in unit cell-thick layers of chromium germanium telluride (Cr2Ge2Te6) (1) and chromium triiodide (CrI3) (2) has both revitalized the field of two-dimensional (2D) magnetism (3) and added 2D magnets such as these and Fe5–xGeTe2 (4) to the expanding library of 2D materials.