We propose time-resolved polarized SANS measurements on magnetically and sterically anisotropic Janus nanoparticles. The aim of the experiment is to investigate the impact of shape anisotropy and exchange bias (induced by interaction of the FePt and MnO subunits of the hetero-dimers) on the magnetization relaxation of the particles subject to an oscillating magnetic field in an extended frequency range. This study is an essential part of the Marie-Curie project 'Magnetization dynamics in anisotropic nanoparticles (FP7-PEOPLE-2011-IEF 298918)'. As a result, we expect to gain precise information on the magnetization dynamics in such anisotropic nanocomposites. The understanding of such fundamental nanomagnetic properties promises to contribute to the development of emerging multifunctional nanomaterials for magnetization relaxation applications.