Heavy electron behavior in a new uranium-based ternary compound: UPd2Sn |
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| Institution: | 1. Department of Physics, Kurukshetra University, Kurukshetra-136119, Haryana, India;2. Department of Physics, Panjab University, Chandigarh-160014, India;3. New Technologies—Research Center, University of West Bohemia, Univerzitni 8, 306 14 Pilsen, Czech Republic;4. Center of Excellence Geopolymer and Green Technology, School of Material Engineering, University Malaysia Perlis, 01007 Kangar, Perlis, Malaysia;1. State Key Laboratory for Magnetism, Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;2. University of Chinese Academy of Sciences, Beijing 100049, China |
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| Abstract: | Electrical resistivity, magnetic susceptibility and specific heat measurements on a new compound, UPd2Sn, reveal that this material exhibits valence fluctuation or Kondo lattice phenomena below a characteristic temperature ∼ 10 K. In particular, the electronic specific heat coefficient appears to be strongly temperature dependent with a maximum of ∼ 270 mJ/mole U−K2 at 9.7 K and an extrapolated value of ∼ 70 mJ/mole U−K2 at 0 K. The compound UPd2Sn was expected to crystallize in the same structure as the family of cubic Heusler alloys, but instead, crystallized in a more complicated structure which appears to be orthorhombic. The compound can be characterized as a nonmagnetic, nonsuperconducting heavy electron material. |
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