Journal article
NdHO, a novel oxyhydride
University of Oslo1
Microstructures and Interfaces, Fuel Cells and Solid State Chemistry Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark2
Fuel Cells and Solid State Chemistry Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark3
Risø National Laboratory for Sustainable Energy, Technical University of Denmark4
Energy and Materials, Department of Chemistry, Technical University of Denmark5
Department of Chemistry, Technical University of Denmark6
A new metal oxyhydride; neodymium oxyhydride, NdHO, has been synthesized from a reactant mixture of metal hydride (CaH2 or NdH3) and neodymium oxide(Nd2O3). The unit cell dimensions decrease smoothly in the series from LaHO, CeHO, PrHO to NdHO, in line with the lanthanide contraction. The crystal structure of NdHO is described on the basis of Rietveld refinement on neutron powder diffraction data: Space group: P4/nmm (no. 129,D4h 7 ).
Axis lengths: a¼7.8480(5) A˚,c¼5.5601(8) A˚. Volume: V¼342.46(6) ˚A3. The tetragonal structure is derived from the fluorite structure, showing complete ordering of hydride and oxide ions over the anion sublattice. The formation of NdHO was further substantiated by Raman spectroscopy.
| Language: | English |
|---|---|
| Year: | 2011 |
| Pages: | 1890-1894 |
| ISSN: | 1095726x and 00224596 |
| Types: | Journal article |
| DOI: | 10.1016/j.jssc.2011.05.025 |
| ORCIDs: | Berg, Rolf W. |
