Crystal structure and magnetic properties of the new ternary actinide compounds AnPd5Al2 (An = U, Np)

We report the crystal structure and magnetic properties of new ternary actinide compounds UPd5Al2 and NpPd5Al2. Both compounds crystallize in the body-centered tetragonal ZrNi2Al5-type tetragonal structure (I 4/mmm). Although the magnetic susceptibility of both compounds follows the Curie-Weiss beha...

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Published in:Journal of alloys and compounds 2008-09, Vol.464 (1-2), p.47-50
Main Authors: HAGA, Y, AOKI, D, SHIOKAWA, Y, ONUKI, Y, HOMMA, Y, IKEDA, S, MATSUDA, T. D, YAMAMOTO, E, SAKAI, H, TATEIWA, N, DUNG, N. D, NAKAMURA, A
Format: Article
Language:English
Subjects:
Alloys
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Condensed matter: structure, mechanical and thermal properties
Exact sciences and technology
Magnetic properties and materials
Magnetically ordered materials: other intrinsic properties
Physics
Saturation moments and magnetic susceptibilities
Structure of solids and liquids
crystallography
Structure of specific crystalline solids
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Summary:We report the crystal structure and magnetic properties of new ternary actinide compounds UPd5Al2 and NpPd5Al2. Both compounds crystallize in the body-centered tetragonal ZrNi2Al5-type tetragonal structure (I 4/mmm). Although the magnetic susceptibility of both compounds follows the Curie-Weiss behavior at high temperature, no magnetic phase transition was observed. UPd5Al2 has a nonmagnetic ground state where the magnetic susceptibility saturates at low temperature, while NpPd5Al2 superconducts below 4.9 K as reported recently.
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2007.10.037