2010
DOI: 10.1103/physrevb.82.094407
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Magnetic and electronic properties of the ferromagnetic Kondo-lattice systemNp2PdGa3

Abstract: Intermetallic compounds Lu 2 PdGa 3 and Np 2 PdGa 3 have been found to crystallize in an orthorhombic CeCu 2 -type structure with the Imma space group. The lattice parameters at room temperature are: a = 0.4382͑2͒, b = 0.6870͑3͒, and c = 0.7593͑3͒ nm for Lu 2 PdGa 3 and a = 0.4445͑2͒, b = 0.7089͑3͒, and c = 0.7691͑3͒ nm for Np 2 PdGa 3 . The electronic ground-state properties of these compounds were established by magnetic, calorimetric, electrical resistivity, magnetoresistance, and Hall coefficient measureme… Show more

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Cited by 19 publications
(28 citation statements)
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“…A similar behavior has been recently observed in neptunium compounds NpNiSi 2 [27] and Np 2 PdGa 3 [28].…”
Section: The Underscreened Kondo Lattice Model Applied To Uranium Comsupporting
confidence: 57%
“…A similar behavior has been recently observed in neptunium compounds NpNiSi 2 [27] and Np 2 PdGa 3 [28].…”
Section: The Underscreened Kondo Lattice Model Applied To Uranium Comsupporting
confidence: 57%
“…This new scenario presented here for UCu 2 Si 2 enlarges the list of the growing family of the UKL ferromagnetic compounds, with already known some uranium compounds such as UTe [9] or recently neptunium compounds like NpNiSi 2 [10] or Np 2 PdGa 3 [11]. This peculiar UKL behaviour arises from the localized spins of the actinide atoms which are larger than the s = 1/2 conduction electron spins and consequently cannot be completely screened at very low temperatures.…”
Section: Electrical Transport Resultsmentioning
confidence: 99%
“…In the case of actinide compounds with 5 f electrons, it is known that some of them exhibit a coexistence of Kondo effect and ferromagnetism. Some uranium and neptunium compounds such as UTe [2,3,4], UCu 0.9 Sb 2 [5], UCo 0.5 Sb 2 [6], NpNiSi 2 [7] and Np 2 PdGa 3 [8] present this behavior, with Curie temperatures of order T C ∼ 50 − 100K, which are higher than the magnetic transition temperatures observed in the rare-earth compounds. Another interesting behavior is the variation of T C as a function of applied pressure in UTe [9,10], where T C increases firstly with pressure, goes then through a maximum and finally decreases at very high pressures.…”
Section: Introductionmentioning
confidence: 85%