Abstract
Samples of fcc (γ) CrH and hcp (ɛ) CrH have been prepared by cathodic electrodeposition of chromium and studied by powder neutron diffraction at 8 K and by inelastic neutron scattering (INS) at 5 K in the range of energy transfers 6–400 meV. A profile analysis of the neutron diffraction patterns showed that hydrogen occupies octahedral interstitial sites in the fcc metal lattice of γ-CrH with a = 3.854(3) Å and in the hcp metal lattice of ɛ-CrH with a = 2.719(3) Å and c = 4.433(4) Å. No magnetic ordering was detected in either hydride at 8 K. The INS investigation demonstrated that the fundamental band of optical hydrogen vibrations in both hydrides consists of a strong peak with a broad shoulder towards higher energies. The peak position is 118 meV for γ-CrH and 122 meV for ɛ-CrH.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
