Thèse (2021-2024)
Encadrée par Antoine Barbier
N-doped oxides and/or oxynitrides constitute a booming class of compounds with a broad spectrum of useable properties and in particular for novel technologies of carbon-free energy production and optoelectronics. The insertion of nitrogen in the crystal lattice of an oxide semiconductor allows in principle to modulate the value of the optical band gap, enabling new functionalities. In this thesis work, single crystalline heterostructures were grown by atomic plasma-assisted molecular beam epitaxy including N doped ferroelectric BaTiO and ferromagnetic spinel Co ferrite. The resulting structures were investigated for their physical properties, as a function of the N doping. The work is part of the ANR MULTINANO project.