期刊
MATERIALS CHEMISTRY AND PHYSICS
卷 121, 期 1-2, 页码 47-52出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2009.12.040
关键词
Magnetic materials; Chemical synthesis; Magnetometry; Magnetic properties
资金
- National Academy of Sciences of the Ukraine
- INTAS [03-51-4532]
- NIH [SC3GM088042, RCMI 1G12RR026260-01]
Thermal decomposition of the trinuclear heterometallic oxoacetates [Fe2M(mu(3)-O)(CH3COO)(6)(H2O)(3)] has been used as a single-precursor method for synthesis of the spinel-structured ternary oxides MFe2O4 (M = Mn-II, Co-II, and Ni-II). This facile process occurring at 320 degrees C results in the formation of nanocrystalline (7-20 nm) highly pure stoichiometric ferrites in quantitative yield. The magnetic properties of these nanoparticulate ferrites were studied in the 10-300 K temperature range, revealing superparamagnetic behavior for the Ni and Mn particles and ferrimagnetic behavior for the Co ones at room temperature. Their blocking temperatures follow the order: CoFe2O4 > MnFe2O4> NiFe2O4. (C) 2010 Elsevier B.V. All rights reserved.
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