4
views
0
recommends
+1 Recommend
0 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: found
      Is Open Access

      Zero-Field and Field-Induced Interactions between Multicore Magnetic Nanoparticles

      research-article

      Read this article at

      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          In this paper, the Langevin dynamics simulation method is used to study magnetic interactions between a pair of multicore magnetic nanoparticles subjected to a uniform magnetic field. Multicore nanoparticles are modelled as spherical rigid clusters of single-domain superparamagnetic cores coupled via dipole-dipole interactions. It is shown that the magnetic force between two well-separated clusters in a strong applied field can be accurately described within the induced point-dipole approximation. However, this approximation also assumes that there are no interactions between clusters in the zero-field limit. On the contrary, simulations indicate the existence of a relatively small attractive magnetic force between clusters, even in the absence of an applied field. It is shown that this force is a direct superparamagnetic analog of the van der Waals interaction between a pair of dielectric spheres.

          Related collections

          Most cited references49

          • Record: found
          • Abstract: not found
          • Article: not found

          The London—van der Waals attraction between spherical particles

            Bookmark
            • Record: found
            • Abstract: not found
            • Article: not found

            Superparamagnetism

              Bookmark
              • Record: found
              • Abstract: not found
              • Article: not found

              Langevin-dynamics study of the dynamical properties of small magnetic particles

                Bookmark

                Author and article information

                Journal
                Nanomaterials (Basel)
                Nanomaterials (Basel)
                nanomaterials
                Nanomaterials
                MDPI
                2079-4991
                09 May 2019
                May 2019
                : 9
                : 5
                : 718
                Affiliations
                [1 ]Institute of Continuous Media Mechanics UB RAS, Perm Federal Research Center UB RAS, Perm 614013, Russia; kuznetsov.a@ 123456icmm.ru
                [2 ]Physics of Phase Transitions Department, Perm State University, Perm 614990, Russia
                Author information
                https://orcid.org/0000-0001-7995-0890
                Article
                nanomaterials-09-00718
                10.3390/nano9050718
                6566794
                31075888
                efe77742-1c40-4128-9229-83c86a2f649a
                © 2019 by the author.

                Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license ( http://creativecommons.org/licenses/by/4.0/).

                History
                : 17 April 2019
                : 05 May 2019
                Categories
                Article

                multicore magnetic nanoparticles,magentic nanoclusters,magnetic interactions,langevin dynamics simulations

                Comments

                Comment on this article