Magnetic and electronic properties of NpRhGe

E. Colineau, J. P. Sanchez, F. Wastin, P. Javorský, E. Riffaud, Y. Homma, P. Boulet, J. Rebizant

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


NpRhGe is the neptunium homologue of the ferromagnetic superconductor URhGe, and has been investigated using magnetization, electrical resistivity, specific heat and 237Np Mössbauer spectroscopy. NpRhGe exhibits antiferromagnetic ordering below TN≈21 K with an ordered magnetic moment μNp = 1.14 μB. The value of the isomer shift suggests a Np3+ charge state (configuration 5f4) and possible delocalization of the 5f electrons. The Brillouin-like (J = 1/2) thermal variation of the magnetic hyperfine field indicates that a doublet ground state of the neptunium ion may occur in this compound. The specific heat indicates a high Sommerfeld coefficient value for NpRhGe (195 mJ mol -1 K-2).

Original languageEnglish
Article number255234
JournalJournal of Physics Condensed Matter
Issue number25
Publication statusPublished - 2008 Jun 25


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