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Title: Two-, three-, and four-component magnetic multilayer onion nanoparticles based on iron oxides and manganese oxides
Author: Salazar-Alvarez, German
Lidbaum, Hans
López-Ortega, Alberto
Estrader i Bofarull, Marta
Leifer, Klaus
Sort, Jordi
Suriñach, Santiago (Suriñach Cornet)
Baró, M. D.
Nogués, Josep
Keywords: Òxids
Metalls de transició
Transition metals
Issue Date: 5-Oct-2011
Publisher: American Chemical Society
Abstract: Magnetic multilayered, onion-like, heterostructured nanoparticles are interesting model systems for studying magnetic exchange coupling phenomena. In this work, we synthesized heterostructured magnetic nanoparticles composed of two, three, or four components using iron oxide seeds for the subsequent deposition of manganese oxide. The MnO layer was allowed either to passivate fully in air to form an outer layer of Mn3O4 or to oxidize partially to form MnO|Mn3O4 double layers. Through control of the degree of passivation of the seeds, particles with up to four different magnetic layers can be obtained (i.e., FeO|Fe3O4|MnO|Mn3O4). Magnetic characterization of the samples confirmed the presence of the different magnetic layers.
Note: Versió postprint del document publicat a:
It is part of: Journal of the American Chemical Society, 2011, vol. 133, num. 42, p. 16738-16741
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ISSN: 0002-7863
Appears in Collections:Articles publicats en revistes (Química Inorgànica i Orgànica)

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