In the last decades, CMOS technology optimization has been pushing close to its limits, leading to a slowdown of Moore’s law trend. To overcome these limitations, new strategies have been developed : one of the most promising is spintronics. Spintronics aims to build a new encoding of information, relying on the electron spin and magnetization states. In parallel to spintronics evolution, advanced fabrication methods evolution have enable the realization advanced structures, giving rise to a new branch of magnetic texture called three-dimensional magnetism. In this context, novel geometries are investigated for the encoding and transport of information. This thesis work focuses on magnetic nanowires and on the impact of magneto-crystalline anisotropy on the static magnetization and spinwave propagation.