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Exchange‐Coupled Bimagnetic Wüstite/Metal Ferrite Core/Shell Nanocrystals: Size, Shape, and Compositional Control
Author(s) -
Bodnarchuk Maryna I.,
Kovalenko Maksym V.,
Groiss Heiko,
Resel Roland,
Reissner Michael,
Hesser Günter,
Lechner Rainer T.,
Steiner Walter,
Schäffler Friedrich,
Heiss Wolfgang
Publication year - 2009
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.200900635
Subject(s) - wüstite , ferrimagnetism , materials science , nanocrystal , ferrite (magnet) , oxide , metal , alnico , metallurgy , shell (structure) , composite material , nanotechnology , magnet , magnetic field , magnetization , physics , quantum mechanics
Iron oxide‐based exchange‐coupled nanomagnets consisting of antiferromagnetic wüstite (Fe x O) cores covered by ferrimagnetic metal ferrite shells (see figure) are chemically synthesized in a simple one‐pot procedure. The synthesis allows independent size, shape, and compositional control. The strong exchange coupling at the core/shell interface results in unique magnetic properties.