Study of Magnetite Nanoparticle Suspensions by Photometry and NMR Relaxometry

被引：10

作者：

Bogachev, Yu. V. ^{[1
]}

Gareev, K. G. ^{[1
]}

Matyushkin, L. B. ^{[1
]}

Moshnikov, V. A. ^{[1
]}

Naumova, A. N. ^{[1
]}

机构：

[1] Ulyanov Lenin St Petersburg Electrotech Univ LETI, St Petersburg 197376, Russia

来源：

PHYSICS OF THE SOLID STATE | 2013年 / 55卷 / 12期

关键词：

Magnetite; Transmission Coefficient; Constant Magnetic Field; Spin Relaxation Time; Magnetic Field Induction;

D O I：

10.1134/S106378341312007X

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

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.

引用

页码：2431 / 2435

页数：5

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