Uniform magnetic excitations in NiO nanoparticles

C.R.H. Bahl, L.T. Kuhn, K. Lefmann, P.-A. Lindgård, S. Mørup

    Research output: Contribution to journalConference articleResearchpeer-review

    Abstract

    A sample of isolated disc shaped NiO nanoparticles was studied at the RITA-II triple axis spectrometer at SINQ (PSI) using the newly implemented multi-analyser blade imaging mode. The particles were 13 nm in diameter and had a thickness of about 2.5 nm. A non-dispersive spin excitation was observed at the antiferromagnetic ((1)/(2) (1)/(2) (1)/(2)) reflection at a scattering vector of kappa = 1.30 angstrom(-1), at an energy of 2 0.51 +/- 0.02 meV. This is shown to be due to uniform magnetic excitations in the nanoparticles. (c) 2006 Elsevier B.V. All rights reserved.
    Original languageEnglish
    JournalPhysica B: Condensed Matter
    Volume385-386
    Issue numberPart 1
    Pages (from-to)398-400
    ISSN0921-4526
    DOIs
    Publication statusPublished - 2006
    Event8th International Conference on Neutron Scattering - Sydney, Australia
    Duration: 27 Nov 20052 Dec 2005
    Conference number: 8

    Conference

    Conference8th International Conference on Neutron Scattering
    Number8
    Country/TerritoryAustralia
    CitySydney
    Period27/11/200502/12/2005

    Keywords

    • Nanomagnetism
    • Uniform magnetic excitations
    • Uncompensated spins

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