physica status solidi (b) · 1974 · 19 citations · 5 references
Natural SciencesMaterials SciencePhysicsCondensed Matter PhysicsMaterials PhysicsSolid State PhysicsHydrogen AtomIntermolecular ForcesLattice DynamicsNeutron ScatteringNuclear ForcesNuclear StructureInelastic Neutron ScatteringInelastic ScatteringInelastic Scattering EffectsLanthanide HydridesLattice PhysicsMetal HydridesNeutron Scattering Theory
Abstract A central force lattice dynamical model, previously applied by Slaggie to the CaF 2 structure of ZrH 2 , is extended to the BiF 3 structure. It is used for the analysis of inelastic neutron scattering data on cerium hydrides CeH 1.98 and CeH 2.72 . For both samples the force constants are derived. The values of the corresponding force constants in both hydrides are different. The additional hydrogen in the CeH 2 structure is found to be weakly bound.
5