PL EN


Preferences help
enabled [disable] Abstract
Number of results
2017 | 131 | 4 | 663-665
Article title

Size Dependent Heating Efficiency of Multicore Iron Oxide Particles in Low-Power Alternating Magnetic Fields

Content
Title variants
Languages of publication
EN
Abstracts
EN
Aggregates of superparamagnetic nanoparticles, so called multicore particles get much attention due to collective magnetic behaviour. Despite the fact that saturation magnetization and coercivity of multicore particles are lower than for single particles of comparable size, they can generate large amount of heat in alternating magnetic field. This makes them promising for magnetic hyperthermia. However, correlation between internal magnetic structure of multicore particles and their heating ability in alternating magnetic fields are not clear yet. Detailed experimental investigations are required to determine the optimal sizes of multicore particles and the alternating magnetic field parameters to obtain maximal heat. In this study, we demonstrated how hydrodynamic size of multicore particles influences alternating magnetic field energy absorption. Dense aggregates composed of bare magnetic iron oxide nanoparticles of 13 nm were obtained by coprecipitation. Further peptization allowed to gain aqueous dispersions of multicore particles with various hydrodynamic size, varing from 85 to 170 nm, due to electrostatic stabilization. Multicore particles dispersions have saturation magnetization of 40 A m²/kg_{Fe₃O₄} and coercivity of 79.6 A/m regardless of their size. Dispersion of 85 nm multicore particles is stable and provides specific loss power of 42 W/g_{Fe}. Further increase of hydrodynamic size leads to low stability and loss of the ability to generate heat in alternating magnetic field.
Keywords
Contributors
author
  • Centre of Polymer Systems, University Institute, Tomas Bata University in Zlin, Trida Tomase Bati 5678, 760 01 Zlin, Czech Republic
author
  • Centre of Polymer Systems, University Institute, Tomas Bata University in Zlin, Trida Tomase Bati 5678, 760 01 Zlin, Czech Republic
author
  • Centre of Polymer Systems, University Institute, Tomas Bata University in Zlin, Trida Tomase Bati 5678, 760 01 Zlin, Czech Republic
author
  • Centre of Polymer Systems, University Institute, Tomas Bata University in Zlin, Trida Tomase Bati 5678, 760 01 Zlin, Czech Republic
author
  • Centre of Polymer Systems, University Institute, Tomas Bata University in Zlin, Trida Tomase Bati 5678, 760 01 Zlin, Czech Republic
author
  • Centre of Polymer Systems, University Institute, Tomas Bata University in Zlin, Trida Tomase Bati 5678, 760 01 Zlin, Czech Republic
References
  • [1] S. Dutz, R. Hergt, Nanotechnology 25, 452001 (2014), doi: 10.1088/0957-4484/25/45/452001
  • [2] C.L. Dennis, K.L. Krycka, J.A. Borchers, R.D. Desautels, J. van Lierop, N.F. Huls, A.J. Jackson, C. Gruettner, R. Ivkov, Adv. Funct. Mater. 25, 4300 (2015), doi: 10.1002/adfm.201500405
  • [3] A.Y. Zubarev, A.F. Abu-Bakr, L.Y. Iskakova, S.V. Bulycheva, Magnetohydrodynamics 51, 647 (2015) http://mhd.sal.lv/contents/2015/4/MG.51.4.1.R.html
  • [4] I.S. Smolkova, N.E. Kazantseva, V. Babayan, P. Smolka, H. Parmar, J. Vilcakova, O. Schneeweiss, N. Pizurova, J. Magn. Magn. Mater. 374, 508 (2015), doi: 10.1016/j.jmmm.2014.08.096
  • [5] I.S. Smolkova, N.E. Kazantseva, H. Parmar, V. Babayan, P. Smolka, P. Saha, Mater. Chem. Phys. 155, 178 (2015), doi: 10.1016/j.matchemphys.2015.02.022
  • [6] E. Illes, E. Tombacz, J. Coll. Interf. Sci. 295, 115 (2006), doi: 10.1016/j.jcis.2005.08.003
  • [7] F. Arteaga-Cardona, K. Rojas-Rojas, R. Costo, M.A. Mendez-Rojas, A. Hernando, P. de la Presa, J. Alloys Comp. 663, 636 (2016), doi: 10.1016/j.jallcom.2015.10.285
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv131n4017kz
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.