Journal
CERAMICS INTERNATIONAL
Volume 38, Issue 3, Pages 2563-2568Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2011.11.027
Keywords
Magnetite; Microwave-assisted synthesis; Conventional-hydrothermal synthesis; Saturation magnetization
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Parameters such as temperature, time and presence or absence of microwaves affected the particle size and magnetic properties of synthetic magnetite. The presence of microwaves during crystallization significantly increased the particle size of magnetite in a short time with improved magnetic properties. Magnetite samples were characterized by X-ray diffraction, transmission electron microscopy (TEM) and saturation magnetization measurements. The TEM crystal sizes varied from about 40 to 50 nm at room temperature to greater than 50 nm with wider crystal size distribution at higher temperatures. The saturation magnetization values of synthetic magnetites ranged from 57.4 to 89.0 emu/g. (C) 2011 Elsevier Ltd and Techna Group Sri. All rights reserved.
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