Published May 1, 2006
| Version v1
Journal article
New heavy-fermion compounds An4PdGa12 (An=U, Np, Pu)
- 1. European Commission, Joint Research Centre, Institute for Transuranium Elements, postfach 2340, D-76125 Karlsruhe (Germany)
- 2. CEA, Departement de Recherche Fondamentale sur la Matiere Condensee, 38054 Grenoble cedex 9 (France)
Description
An4PdGa12 (An=U, Np and Pu) are new heavy-fermion materials that crystallize in the cubic Y4PdGa12-type (Im-3m) which is a superstructure of the AuCu3-type (Pm-3m). The doubling of the cell parameters gives a=8.593(1)A, a=8.579(1)A and a=8.611(1)A for U, Np and Pu compounds, respectively. We report, for all the three compounds, noticeable enhanced value of the Sommerfeld coefficient γ (up to 900mJmol-1K-2). Magnetic measurements reveal that U4PdGa12 orders antiferromagnetically at TN=43K with an effective moment μeff=3.40(1) μB in the paramagnetic regime, in good agreement with the theoretical U3+ free ion moment, whereas both Np and Pu homologues do not present any phase transition down 2K
Additional details
Identifiers
- DOI
- 10.1016/j.physb.2006.01.392;
- PII
- S0921-4526(06)00487-X;
Publishing Information
- Journal Title
- Physica. B, Condensed Matter
- Journal Volume
- 378-380
- Journal Page Range
- p. 1031-1032
- ISSN
- 0921-4526
- CODEN
- PHYBE3
Conference
- Title
- International conference on strongly correlated electron systems
- Acronym
- SCES 2005
- Dates
- 26-30 Jul 2005
- Place
- Vienna (Austria)
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 38070531
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- ANTIFERROMAGNETIC MATERIALS; ANTIFERROMAGNETISM; FERMIONS; GALLIUM; INTERMETALLIC COMPOUNDS; LATTICE PARAMETERS; NEPTUNIUM; PALLADIUM; PARAMAGNETISM; PHASE TRANSFORMATIONS; PLUTONIUM; PLUTONIUM COMPOUNDS; TEMPERATURE DEPENDENCE; URANIUM; URANIUM IONS
- Descriptors DEC
- ACTINIDE COMPOUNDS; ACTINIDES; ALLOYS; CHARGED PARTICLES; ELEMENTS; IONS; MAGNETIC MATERIALS; MAGNETISM; MATERIALS; METALS; PLATINUM METALS; TRANSITION ELEMENTS; TRANSURANIUM COMPOUNDS; TRANSURANIUM ELEMENTS
Optional Information
- Copyright
- Copyright (c) 2006 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.