Magnetic Anisotropy: Engineering and Quantum Effects

This lecture explores the atomic-scale engineering of magnetic anisotropy in nanostructures through interfaces and interlines, discussing the effect of crystal structure on recording media, coherent vs. incoherent reversal, and the impact of particle shape. It delves into classic vs. quantum magnetic anisotropy, quantum tunneling of magnetization, level splitting induced by crystal field, phonon, and electron scattering, and quantum tunneling of magnetization in Mn12-acetate. The lecture also covers the superlattice of single atom magnets and provides an overview of mesoscopic physics, from macroscopic to nanoscopic scales, including the behavior of magnetic moments in different domains.