Abstract
The heavy fermion compound UPdIn is found to absorb deuterium without disproportionation to yield (formula presented) Magnetization, heat capacity, x-ray, and neutron-diffraction measurements have been carried out to probe the structural and magnetic properties of this deuteride. It is found that deuterium absorption results in a highly anisotropic lattice expansion, without changing the (formula presented)-type hexagonal structure of the parent compound. The magnetic ordering temperature is enhanced to 80 K and the low-temperature uranium moment to (formula presented) from their corresponding values of 21 K and (formula presented) respectively, in the parent compound. Neutron-diffraction studies on the deuteride reveal antiferromagnetic ordering of the uranium moments and doubling of unit cell along the c axis. Heat capacity measurements show a large reduction in the value of electronic specific heat coefficient γ from 260 mJ (formula presented) (formula presented) in UPdIn to 30 mJ (formula presented) (formula presented) in (formula presented) indicating a significant reduction in the hybridization between uranium (formula presented) electrons and those on the surrounding atoms. © 2002 The American Physical Society.
Recommended Citation
P. Raj et al., "Effect of Deuterium Absorption on the Heavy-fermion Compound UPdIn," Physical Review B - Condensed Matter and Materials Physics, vol. 66, no. 21, pp. 1 - 5, American Physical Society, Jan 2002.
The definitive version is available at https://doi.org/10.1103/PhysRevB.66.214420
Department(s)
Physics
International Standard Serial Number (ISSN)
1550-235X; 1098-0121
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 American Physical Society, All rights reserved.
Publication Date
01 Jan 2002
