6533b855fe1ef96bd12b146a

RESEARCH PRODUCT

Polarized neutron reflectivity from monolayers of self-assembled magnetic nanoparticles

Boris P. TopervergBoris P. TopervergA. DevishviliD. MishraKatharina Theis-bröhlHartmut ZabelHartmut ZabelOleg PetracicOleg Petracic

subject

Materials scienceMagnetic momentPhysics::Instrumentation and DetectorsPhysics::OpticsNanoparticleCondensed Matter PhysicsMolecular physicsCondensed Matter::Materials ScienceCrystallographychemistry.chemical_compoundchemistryRemanenceMonolayerMagnetic nanoparticlesGeneral Materials ScienceWaferIron oxide nanoparticlesMagnetic dipole–dipole interaction

description

We prepared monolayers of iron oxide nanoparticles via self-assembly on a bare silicon wafer and on a vanadium film sputter deposited onto a plane sapphire substrate. The magnetic configuration of nanoparticles in such a dense assembly was investigated by polarized neutron reflectivity. A theoretical model fit shows that the magnetic moments of nanoparticles form quasi domain-like configurations at remanence. This is attributed to the dipolar coupling amongst the nanoparticles.

yearjournalcountryeditionlanguage
2015-03-14Journal of Physics: Condensed Matter
https://doi.org/10.1088/0953-8984/27/13/136001