Sie befinden Sich nicht im Netzwerk der Universität Paderborn. Der Zugriff auf elektronische Ressourcen ist gegebenenfalls nur via VPN oder Shibboleth (DFN-AAI) möglich. mehr Informationen...
Sub-30 nm Fe sub(3)O sub(4) and gamma -Fe sub(2)O sub(3) octahedral particles: preparation and microwave absorption properties
Ist Teil von
Journal of nanoparticle research : an interdisciplinary forum for nanoscale science and technology, 2013-12, Vol.15 (12), p.1-9
Erscheinungsjahr
2013
Link zum Volltext
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
A simple low-cost hydrothermal method has been developed to fabricate uniformly dispersed octahedral Fe sub(3)O sub(4) nanoparticles with tunable size. The particle size can be reduced to 20-30 nm under the effect of phosphate, meanwhile, the edetate disodium can improve the dispersivity of particles. High-resolution transmission electron microscope showed that the octahedral Fe sub(3)O sub(4) nanoparticle was enclosed by eight (111) planes. Octahedral gamma -Fe sub(2)O sub(3) nanoparticles were obtained by reoxidizing the as-synthesized Fe sub(3)O sub(4) nanoparticles. The microwave absorption properties of the octahedral Fe sub(3)O sub(4) and gamma -Fe sub(2)O sub(3) nanoparticles were measured in the frequency range of 2-18 GHz. A minimum reflection loss of -28 dB was observed at 8.6 GHz for octahedral Fe sub(3)O sub(4) nanoparticles.