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Detailed Mössbauer and neutron diffraction results are reported for NpBi, and related to those for other monopnictides NpX (X = N,P,As,Sb). The magnetic behaviour of NpBi confirms the general trend observed for the other Np monopnictides, i.e. an increase of the ordering temperature, ordered moment and isomer shift with increasing Np-Np distances. The magnetic interactions as well as the localised character of the 5f electrons increase from light to heavy pnictogen atoms. The type I triple-k structure is common for the U and Np antimonides and bismuthides, while the corresponding Pu compounds exhibit more complex behaviour. This result emphasises the role played by the mixing of the U or Np 5f electrons with the Sb(Bi) p-band.

Additional information

Authors: SANCHEZ J P ET AL., CEA, CEN, Département de Recherche sur la Fusion Contrôllé/SPh, Grenoble (FR);REBIZANT J, JRC Karlsruhe (DE);SPIRLET J C, JRC Karlsruhe (DE);VOGT O, ETH, Laboratorium für Festkörperphysik, Zürich (CH)
Bibliographic Reference: Paper presented: 21e Journées des Actinides, Montechoro (PT), April 28 - May 1, 1991
Availability: Text not available
Record Number: 199111260 / Last updated on: 1994-12-02
Original language: en
Available languages: en