Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1623334 | Journal of Alloys and Compounds | 2008 | 4 Pages |
Abstract
LaPtIn was attempted hydrogenated at a hydrogen pressure of 182 bar and temperatures from room temperature to 673 K. The crystal structure of the resulting LaPtInH0.53 hydride was determined from powder neutron diffraction data. The structure was indexed on an expanded LaPtIn intermetallic unit cell with space group P6¯2m and dimensions a = 7.8229(2) Ã
and c = 4.1647(2) Ã
. Hydrogen occupies tetrahedral 4h sites in such a way that tetrahedral voids sharing a common face are not simultaneously populated. The result could not support previous density-functional theory calculations regarding the hydrogen absorption capacity of LaPtIn [P. Ravindran, P. Vajeeston, R. Vidya, A. Kjekshus, H. Fjellvåg, Phys. Rev. Lett. 89 (2002) 106403].
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
I.J.T. Jensen, H. Fjellvåg, B.C. Hauback,