Journal
MICRO & NANO LETTERS
Volume 10, Issue 2, Pages 99-104Publisher
INST ENGINEERING TECHNOLOGY-IET
DOI: 10.1049/mnl.2014.0344
Keywords
iron compounds; crystal growth from solution; powders; ageing; surface morphology; particle size; magnetisation; ferromagnetic materials; magnetic particles; hydrothermal synthesis; magnetite; aging time; mechanism research; ethylene glycol solvent; morphology; iron hydroxide powders; spherical shapes; particle size; specific saturation magnetisation; time 1 h to 10 h; Fe3O4
Funding
- Natural Science Foundation of China [81171463, 30870610]
- School of Material Science and Engineering, Shandong University
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Magnetite (Fe3O4) particles are prepared by a hydrothermal method using ethylene glycol as the solvent. Aging time is a very important factor in the reaction process. The properties and morphology of the products with different aging times are investigated. In the initial stage of the reaction (1 and 2 h), the main powders were iron hydroxides. Fe3O4 particles generated (3 h) and grew into spherical shapes (4-10 h) with the extended aging time. The particle size and the specific saturation magnetisation also varied with aging time. By analysing the powders and the liquids during the reaction, a probable mechanism is studied.
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