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A voyage from bulk via thin film and nanoparticles to surface magnetism

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I will start by discussing results on magnetically-doped topological insulators (thick films/bulk) of materials such as Cr-Bi2Se3, which ideally should exhibit an insulating bulk and an electrically conductive surface. We will see how these magnetic and electrical properties could be used technologically. Then, I am going to show thin film magnetism phenomena at surfaces and interfaces such as at EuO/LaAlO3(001) or Graphene/Co (Ni). I will then extend these insights to magnetic nanoparticles and see that their surfaces can exhibit other long range ordering than their cores as present in NiO nanoparticles. Finally if time permits, I will focus on magnetic surfaces and present recent results from spin-polarised low energy electron loss spectroscopy on Fe(001)/Ag(001) heterostructures.

This talk is part of the Surfaces, Microstructure and Fracture Group series.

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