Magnetic properties of nanostructured hollow microspheres

Computer simulations are presented to explore the magnetic and magnetomechanical properties of hollow microspheres consisting of a self-supporting shell of iron-oxide nanoparticles which were recently synthesized in experiment. The magnetic properties of the microspheres are governed by the dipolar...

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Veröffentlicht in:	Journal of magnetism and magnetic materials 2007-03, Vol.310 (2), p.2453-2455
Hauptverfasser:	Gruner, M.E., Entel, P.
Format:	Artikel
Sprache:	eng
Schlagworte:	Condensed matter: electronic structure, electrical, magnetic, and optical properties Cross-disciplinary physics: materials science rheology Dipolar interaction Exact sciences and technology Hollow microspheres Magnetic nanoparticles Magnetic properties and materials Materials science Nanopowders Nanoscale materials and structures: fabrication and characterization Physics Small particles and nanoscale materials Spin arrangements in magnetically ordered materials (including neutron and spin-polarized electron studies, synchrotron-source x-ray scattering, etc.) Studies of specific magnetic materials
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Beschreibung
Zusammenfassung:	Computer simulations are presented to explore the magnetic and magnetomechanical properties of hollow microspheres consisting of a self-supporting shell of iron-oxide nanoparticles which were recently synthesized in experiment. The magnetic properties of the microspheres are governed by the dipolar interactions between the nanoparticles, leading to a complex vortex ground state structure with the magnetic moments aligned parallel to the surface. In magnetic fields, considerable deformations are observed that withstand external applied pressures.
ISSN:	0304-8853
DOI:	10.1016/j.jmmm.2006.10.917