This article is cited in 9 papers

Semiconductors

Study of magnetite nanoparticle suspensions by photometry and NMR relaxometry

Yu. V. Bogachev, K. G. Gareev, L. B. Matyshkin, V. A. Moshnikov, A. N. Naumova

Saint Petersburg Electrotechnical University "LETI"

Abstract: A method has been described for preparation of suspensions of magnetite nanoparticles stabilized by porous silicon dioxide. The process of sedimentation of nanoparticles in suspensions of different compositions and concentrations has been analyzed by transmission coefficient measurements. Spectra of the transmission coefficient have been obtained for suspensions containing composite nanoparticles, the initial silicon dioxide, and macroscopic magnetite particles. The average effective radius of nanoparticles has been calculated from the time dependences of the transmission coefficient. It has been demonstrated that the synthesized nanoparticles possess magnetic-resonance contrast properties.

Received: 18.02.2013

 English version: Physics of the Solid State, 2013, 55:12, 2431–2435

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