Synthesis and properties of magnetic fluids produced on the basis of magnetite particles

Synthesis and properties of magnetic fluids produced on the basis of magnetite particles Magnetic fluids based on magnetite synthesized by the chemical condensation method at temperatures of 25, 40, 60, and 80°C were obtained and studied. Magnetite particles were examined by X-ray phase and X-ray fluorescence analyses and electron microscopy. The average size of the coherent scattering region of magnetite particles was 13–17 nm, depending on the synthesis temperature. Magnetic fluids were synthesized from magnetite particles obtained at 25 and 80°C, with water and octane serving as carrier fluids. The NMR method was used to determine the saturation magnetization and average magnetic moment of the particles: for water-based magnetic fluids, 2100 A m–1 and 5.7 × 10–19 A m2 at magnetite particle synthesis temperature of 25°C and 3670 A m–1 and 4.6 × 10–19 A m2 at magnetite particle synthesis temperature of 80°C; for octane-based magnetic fluids, 2250 A m–1 and 4.1 × 10–19 A m2 at magnetite particle synthesis temperature of 25°C. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Applied Chemistry Springer Journals

Synthesis and properties of magnetic fluids produced on the basis of magnetite particles

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Publisher
Pleiades Publishing
Copyright
Copyright © 2016 by Pleiades Publishing, Ltd.
Subject
Chemistry; Chemistry/Food Science, general; Industrial Chemistry/Chemical Engineering
ISSN
1070-4272
eISSN
1608-3296
D.O.I.
10.1134/S1070427216050025
Publisher site
See Article on Publisher Site

Abstract

Magnetic fluids based on magnetite synthesized by the chemical condensation method at temperatures of 25, 40, 60, and 80°C were obtained and studied. Magnetite particles were examined by X-ray phase and X-ray fluorescence analyses and electron microscopy. The average size of the coherent scattering region of magnetite particles was 13–17 nm, depending on the synthesis temperature. Magnetic fluids were synthesized from magnetite particles obtained at 25 and 80°C, with water and octane serving as carrier fluids. The NMR method was used to determine the saturation magnetization and average magnetic moment of the particles: for water-based magnetic fluids, 2100 A m–1 and 5.7 × 10–19 A m2 at magnetite particle synthesis temperature of 25°C and 3670 A m–1 and 4.6 × 10–19 A m2 at magnetite particle synthesis temperature of 80°C; for octane-based magnetic fluids, 2250 A m–1 and 4.1 × 10–19 A m2 at magnetite particle synthesis temperature of 25°C.

Journal

Russian Journal of Applied ChemistrySpringer Journals

Published: Aug 12, 2016

References

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