Lattice dynamics of LuPO4

Abstract Lutetium orthophosphate is an important nonmagnetic host material for rare-earth activated luminescence applications. We have measured the LuPO 4 phonon density of states and dispersion curves along the [ ξ 00], [ ξ ξ 0] and [00 ξ ] symmetry directions by neutron spectroscopy using polycrystalline and single crystal samples. A quantitative analysis of the neutron results was carried out using a lattice dynamic shell model.