Spinel ferrite/MnO core/shell nanoparticles: chemical synthesis of all-oxide exchange biased architectures.

J Am Chem Soc

Materials Department and Materials Research Laboratory, University of California, Santa Barbara, California 93106, USA.

Published: July 2005

In this communication, we report the synthesis and characterization of organic-capped core/shell CoFe2O4/MnO nanoparticles. Magnetic properties of the core/shell nanoparticles were compared to those of individual CoFe2O4 and MnO nanoparticles prepared with similar methods. Magnetic measurements revealed that the core/shell nanoparticles displayed a shift in the hysteresis loops corresponding to exchange biasing exchange fields of about 0.6 kOe, due to the ferrimagnetic/antiferromagnetic interface.

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http://dx.doi.org/10.1021/ja051244sDOI Listing

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