Abstract
A basic model has been proposed to describe the resonance spectra of the paramagnetic sensor particles in dispersions of magnetic nanoparticles aggregated in chains. A theory of the line shape of low-mobility sensors has been developed in the case of chains of a sufficiently homogeneous length. A specific line shift has been shown to appear in such systems and the spectrum may be asymmetric. The ESR spectra of a magnetite-based magnetic liquid have been measured and the main parameters of the chains have been determined.
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Original Russian Text © F.S. Dzheparov, O.N. Sorokina, A.L. Kovarski, 2009, published in Pis’ma v Zhurnal Éksperimental’noĭ i Teoreticheskoĭ Fiziki, 2009, Vol. 89, No. 11, pp. 665–669.
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Dzheparov, F.S., Sorokina, O.N. & Kovarski, A.L. ESR line shape of paramagnetic particles in a magnetic liquid. Theory and experiment. Jetp Lett. 89, 563–567 (2009). https://doi.org/10.1134/S0021364009110083
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DOI: https://doi.org/10.1134/S0021364009110083