期刊
MATERIALS CHEMISTRY AND PHYSICS
卷 225, 期 -, 页码 292-297出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2019.01.003
关键词
Ferrofluid; Magnetite nanoparticles; One-step synthesis; Superparamagnetic nanoparticles; Ferromagnetic resonance
资金
- Russian Science Foundation [17-12-01111]
- Russian Science Foundation [17-12-01111] Funding Source: Russian Science Foundation
The ultrafine (d = 4 nm) magnetite ferrofluid with a narrow nanoparticle size distribution has been synthesized in one stage at room temperature from a solution of iron(II) and (III) chlorides in dimethylsulfoxide (DMSO) with the propylene epoxide admixture. This is the first example of obtaining a stable concentrated ultrafine magnetite/DMSO ferrofluid at room temperature. X-ray diffraction, transmission electron microscopy, ferromagnetic resonance, Mossbauer spectroscopy, and magnetostatic study have been used to elucidate the role of DMSO and the H2O/DMSO ratio in the formation of a stable colloid with a desired nanoparticle size. The initial stages of the magnetite nanoparticles formation have been investigated by the ferromagnetic resonance technique.
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