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Transmission Spectra of Diluted and Concentrated Magnetite Colloids in Liquid Dielectrics

Abstract

The transmission spectra of colloidal solutions of magnetite nanoparticles in kerosene with different volume concentrations of the solid phase and the influence of an external magnetic field on them have been studied. It has been found that with increasing the magnetite concentration, a pronounced maximum in the near-infrared region of 740–760 nm appeares in the spectra. The limits of magnetite concentration have been established at which the transmission spectra are successfully described based on the Bouguer–Lambert law. It is shown that the appearance of a maximum in the transmission spectra with increasing concentration is associated with a minimum in the spectrum of the imaginary part of the refractive index of nanosized magnetite.

For citations:


Yerin K.V., Vivchar V.I. Transmission Spectra of Diluted and Concentrated Magnetite Colloids in Liquid Dielectrics. Zhurnal Prikladnoii Spektroskopii. 2023;90(6):843-849. (In Russ.)

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ISSN 0514-7506 (Print)