Agnieszka Kozub - Science profile - Bridge of Knowledge

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  • Electronic structure and magnetism of samarium and neodymium adatoms on free-standing graphene

    • A. Kozub
    • A. Shick
    • F. Máca
    • J. Kolorenč
    • A. Lichtenstein

    - PHYSICAL REVIEW B - Year 2016

    The electronic structure of selected rare-earth atoms adsorbed on a free-standing graphene was investigated using methods beyond the conventional density functional theory (DFT+U, DFT +HIA, and DFT+ED). The influence of the electron correlations and the spin-orbit coupling on the magnetic properties has been examined. The DFT+U method predicts both atoms to carry local magnetic moments (spin and orbital) contrary to a nonmagnetic...

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  • Structure and paramagnetism in weakly correlated Y8Co5

    • T. Klimczuk
    • V. A. .. Sidorov
    • A. Szajek
    • M. Werwiński
    • S. A. J. Kimber
    • A. Kozub
    • D. Safarik
    • J. D. Thompson
    • R. J. Cava

    - JOURNAL OF PHYSICS-CONDENSED MATTER - Year 2013

    We report the basic physical properties of monoclinic Y8Co5 determined by means of magnetic susceptibility, electrical resistivity, and specific heat measurements. The crystal structure of Y8Co5 is monoclinic (P21/c) with lattice parameters a = 7.0582(6) Å, b = 7.2894(6) Å, c = 24.2234(19) Å, and β = 102.112(6)° as refined by using synchrotron powder x-ray diffraction data. The compound shows temperature independent paramagnetism...

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  • Site-selective magnetic order of neptunium inNp2Ni17

    • A. Hen
    • N. Magnani
    • J. Griveau
    • R. Eloirdi
    • E. Colineau
    • J. Sanchez
    • I. Halevy
    • A. Kozub
    • A. Shick
    • I. Orion
    • R. Caciuffo

    - PHYSICAL REVIEW B - Year 2015

    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...

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