Shape- and Size-Controlled Synthesis and Dependent Magnetic Properties of Nearly Monodisperse Mn3O4 Nanocrystals

Shape- and Size-Controlled Synthesis and Dependent Magnetic Properties of Nearly Monodisperse Mn3O4 Nanocrystals

A two‐phase synthesis technique is developed for high‐quality Mn3O4 nanocrystals with morphologies that approach monodisperse spheres and perfect cubes. The cubic nanocrystals gradually evolve into spheres over time at an elevated temperature (see graph). The dependence of magnetic properties on the...

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Veröffentlicht in:Small (Weinheim an der Bergstrasse, Germany) Germany), 2008-01, Vol.4 (1), p.77-81
Hauptverfasser: Zhao, Nana, Nie, Wei, Liu, Xiaobo, Tian, Shizhe, Zhang, Ying, Ji, Xiangling
Format: Artikel
Sprache:eng
Schlagworte:
magnetic properties
Magnetics
manganese
Manganese Compounds - chemistry
Metal Nanoparticles - chemistry
Microscopy, Electron, Transmission
nanocrystals
Oxides - chemistry
self-assembly
two-phase synthesis
X-Ray Diffraction
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Beschreibung
Zusammenfassung:A two‐phase synthesis technique is developed for high‐quality Mn3O4 nanocrystals with morphologies that approach monodisperse spheres and perfect cubes. The cubic nanocrystals gradually evolve into spheres over time at an elevated temperature (see graph). The dependence of magnetic properties on their size and shape is investigated. Moreover, the characteristics and properties of structures formed by self‐assembly of the nanoparticles are explored.
ISSN:1613-6810
1613-6829
DOI:10.1002/smll.200700698