Optic modes in FeTiH1.14

Abstract
The inelastic incoherent neutron scattering spectrum of nominally beta -FeTiH1.14 shows a broad peak due to optic modes near 100 meV. Its width increases strongly on heating from 10K to 300K. Small side peaks at 70 meV and 85 meV may be due to different phases of FeTiHx.