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Site-selective magnetic order of neptunium inNp2Ni17

Abstract

We present the results obtained by superconducting quantum interference device (SQUID) magnetometry, specific heat, and Mossbauer spectroscopy measurements carried out on Np2Ni17 polycrystalline samples. We show that long-range magnetic order, with a moment mu((2b)) similar to 2.25 mu(B), occurs below T-N = 17.5 K on the Np (2b) sites. A nontrivial situation is observed in that the other Np sites (2d) do not take part to the order transition and carry only an induced moment of about 0.2 mu(B) below T-N. A combined analysis of the different experimental data sets allowed us to determine key parameters associated with the electronic structure of the system. The experimental results are discussed against first-principles electronic structure calculations based on the spin-polarized local spin density approximation plus Hubbard interaction.

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Authors (11)

  • Photo of  A. Hen

    A. Hen

    • European Commission, Joint Research Centre Institute for Transuranium Elements ITU
  • Photo of  N. Magnani

    N. Magnani

    • European Commission, Joint Research Centre Institute for Transuranium Elements ITU
  • Photo of  J.-C. Griveau

    J.-C. Griveau

    • European Commission, Joint Research Centre Institute for Transuranium Elements ITU
  • Photo of  R. Eloirdi

    R. Eloirdi

    • European Commission, Joint Research Centre Institute for Transuranium Elements ITU
  • Photo of  E. Colineau

    E. Colineau

    • European Commission, Joint Research Centre Institute for Transuranium Elements ITU
  • Photo of  J.-P. Sanchez

    J.-P. Sanchez

    • CEA INAC SPSMS
  • Photo of  I. Halevy

    I. Halevy

    • Ben Gurion University of the Negev Department of Nuclear Engineering
  • Photo of  A. Shick

    A. Shick

    • Institute of Physics, Academy of Sciences of the Czech Republic Department of Condensed Matter Theory
  • Photo of  I. Orion

    I. Orion

    • Ben Gurion University of the Negev Department of Nuclear Engineering
  • Photo of  R. Caciuffo

    R. Caciuffo

    • European Commission, Joint Research Centre Institute for Transuranium Elements ITU

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Publication version
Accepted or Published Version
DOI:
Digital Object Identifier (open in new tab) 10.1103/PhysRevB.92.024410
License
Copyright (2015 American Physical Society)

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Details

Category:
Articles
Type:
artykuł w czasopiśmie wyróżnionym w JCR
Published in:
PHYSICAL REVIEW B no. 92, edition 2, pages 1 - 7,
ISSN: 2469-9950
Language:
English
Publication year:
2015
Bibliographic description:
Hen A., Magnani N., Griveau J., Eloirdi R., Colineau E., Sanchez J., Halevy I., Kozub A., Shick A., Orion I., Caciuffo R.: Site-selective magnetic order of neptunium inNp2Ni17// PHYSICAL REVIEW B. -Vol. 92, iss. 2 (2015), s.1-7
DOI:
Digital Object Identifier (open in new tab) 10.1103/physrevb.92.024410
Verified by:
Gdańsk University of Technology

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