Hidden Magnetic Complexity Within a Simple van der Waals Ferromagnet Ce$_2$Te$_5$
Ce$_2$Te$_5$ is a layered $f$-electron van der Waals magnet in which reduced dimensionality and inequivalent Ce sites give rise to competing magnetic interactions. We investigate its magnetic ground state using muon spin relaxation ($\mu$SR), neutron powder diffraction (NPD), and inelastic neutron scattering (INS). Zer...