| Autor: |
E D, Bauer, P H, Tobash, J N, Mitchell, J A, Kennison, F, Ronning, B L, Scott, J D, Thompson |
| Rok vydání: |
2011 |
| Zdroj: |
Journal of physics. Condensed matter : an Institute of Physics journal. 23(9) |
| ISSN: |
1361-648X |
| Popis: |
The physical properties including magnetic susceptibility, specific heat, and electrical resistivity of two new plutonium compounds Pu2M3Si5 (M = Co, Ni) are reported. Pu2Ni3Si5 crystallizes in the orthorhombic U2Co3Si5 structure type, which can be considered a variant of the BaAl4 tetragonal structure, while Pu2Co3Si5 adopts the closely related monoclinic Lu2Co3Si5 type. Magnetic order is observed in both compounds, with Pu2Ni3Si5 ordering ferromagnetically at T(C) = 65 K then undergoing a transition into an antiferromagnetic state below T(N) = 35 K. Two successive magnetic transitions are also observed at T(mag1) = 38 K and T(mag2) = 5 K in Pu2Co3Si5. Specific heat measurements reveal that these two materials have a moderately enhanced Sommerfeld coefficient γ ∼ 100 mJ/mol Pu K(2) in the magnetic state with comparable RKKY and Kondo energy scales. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
