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|Title:||Electrical Resistivity and Specific Heat Studies of NpFe4Al8|
|Authors:||GONCALVES A.p.; ALMEIDA M.; WASTIN FRANCK; COLINEAU ERIC; BOULET Pascal; JAVORSKY Pavel; REBIZANT JEAN|
|Citation:||JOURNAL OF ALLOYS AND COMPOUNDS vol. 416 p. 164-168|
|Type:||Articles in periodicals and books|
|Abstract:||Electrical resistivity and specific heat of a stoichiometric NpFe4Al8 polycrystalline sample were measured between 2-300 K, and under 0-9 T applied magnetic fields. Both measurements confirm the occurrence of magnetic ordering at 135(5) K. The electrical resistivity displays a second anomaly at 113(5) K, which was ascribed to the neptunium magnetic ordering. There is a clear evidence of predominant ferromagnetic-like interactions in this compound, but with a complex magnetic structure, as previously suggested by the magnetic measurements and theoretical calculations. The high g = 183(10) mJmol-1K-2 value classifies the NpFe4Al8 compound as a moderate heavy fermion.|
|JRC Directorate:||Nuclear Safety and Security|
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