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Electron Microscopy Study of Submicron Size Antiferromagnetic KMnF3 Nanoparticles and Their Self-assembly

Published online by Cambridge University Press:  10 February 2011

Jeffrey Anderson ,
Rubi Garcia  and
Weilie L. Zhou
Jeffrey Anderson
Affiliation:
The Academy of the Sacred Heart, New Orleans LA, 70115
Rubi Garcia
Affiliation:
Advanced Materials Research Institute, University of New Orleans, New Orleans LA 70148
Weilie L. Zhou
Affiliation:
Advanced Materials Research Institute, University of New Orleans, New Orleans LA 70148
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Abstract

Submicron KMnF3 cubic and spherical nanoparticles were synthesized using the reverse micelle method. The nanostructures of the nanocrystals were studied by field emission electron microscopy and transmission electron microscopy. KMnF3 nanocrystals synthesized at room temperature started with cubic submicron particles (∼100 nm) and consisted of KMnF3 nanocrystallites (10-15 nm). As the reaction continued, the nanocrystals fused together and transformed into perfect cubic nanocrystals. Spherical beads composed of KMnF3 nanocrystallites were observed at low temperature synthesis. As the reaction continued, the spherical particles grew larger, however, no characteristic cubic shape of KMnF3 nanoparticles were observed. Even as they grew larger, there was no evidence of homogeneous crystal morphology as seen in the room temperature samples. Cubic shape KMnF3 nanocrystals were self-assembled into large area self-assembling patterns.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 775: Symposium P – Self-Assembled Nanostructured Materials , 2003 , P9.4
Copyright
Copyright © Materials Research Society 2003

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