Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/5892
Title: Understanding the formation of ultrafine spinel CoFe₂O₄ nanoplatelets and their magnetic properties
Authors: Liu, W
Chan, YK
Cai, J
Leung, CW 
Mak, CL 
Wong, KH
Zhang, F
Wu, X
Qi, XD
Keywords: Cobalt compounds
Coercive force
Crystal morphology
Ferrites
Magnetic relaxation
Nanofabrication
Nanomagnetics
Issue Date: 15-Nov-2012
Publisher: American Institute of Physics
Source: Journal of applied physics, 15 Nov. 2012, v. 112, no. 10, 104306, p. 1-8 How to cite?
Journal: Journal of applied physics 
Abstract: Cobalt ferrite (CoFe₂O₄, CFO) nanoplatelets with a rhomboidal shape were synthesized through a facile hydrothermal route using a very low concentration precursor at low temperatures. The effects of reaction temperature and time on the morphologies as well as the sizes of the products were systemically investigated. The as-synthesized CFO nanocrystals showed a special rhomboidal shape with crystal growth along the (111) direction. The very low concentration precursor plays an important role in forming CFO nanocrystals with such special shape and ultrafine size. The single-phase CFO nanoplatelets synthesized at 180 °C with size of 17 nm present high saturation magnetization (79.7 emu/g) and high coercivity (3100 Oe). The preparation conditions have significant effects on the crystal size and shape, magnetization and relaxation activation of the CFO nanoplatelets.
URI: http://hdl.handle.net/10397/5892
ISSN: 0021-8979
EISSN: 1089-7550
DOI: 10.1063/1.4765033
Rights: © 2012 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Wenchao Liu et al., J. Appl. Phys. 112, 104306 (2012) and may be found at http://link.aip.org/link/?jap/112/104306
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