Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 132, Issue 50, Pages 17686-17689Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ja1091084
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Funding
- NSF [CHE 0848701, CBET 0709113]
- Direct For Mathematical & Physical Scien
- Division Of Chemistry [0848701] Funding Source: National Science Foundation
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We report a novel core-shell-structured ternary nanocube of MnZn ferrite synthesized by controlling the reaction temperature and composition in the absence of conventionally used reducing agents. The highly monodispersed core-shell structure consists of an Fe3O4 core and an MnZn Ferrite shell. The observation of a Moire pattern indicates that the core and the shell are two highly crystalline materials with slightly different lattice constants that are rotated relative to each other by a small angle. The ternary core-shell nanocubes display magnetic properties regulated by a combination of the core-shell composition and exhibit an increased coercivity and field-cooled/zero-field-cooled characteristics drastically different from those of regular MnZn ferrite nanoparticles. The ability to engineer the spatial nanostructures of ternary magnetic nanoparticles in terms of shape and composition offers atomic-level versatility in fine-tuning the nanoscale magnetic properties.
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