The comparative study of particle size distribution in magnetic fluids

被引：9
|
作者：
Timko, M [1 ]
Kopcansky, P
Koneracká, M
Skumiel, A
Labowski, M
Jozefczak, A
Bica, D
Balau, O
Vékás, L
Fannin, PC
Giannitsis, AT
机构：
[1] Slovak Acad Sci, Inst Expt Phys, Kosice 04353, Slovakia
[2] Adam Mickiewicz Univ Poznan, Inst Acoust, PL-60769 Poznan, Poland
[3] Romanian Acad, Ctr Fundamental & Adv Tech Res, Timisoara, Romania
[4] Trinity Coll Dublin, Dept Elect & Elect Engn, Dublin 2, Ireland
来源：
CZECHOSLOVAK JOURNAL OF PHYSICS | 2002年 / 52卷
关键词：
magnetic fluid; particle size; magnetic susceptibility;
D O I：
10.1007/s10582-002-0068-2
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Water- and physiology-solution-based biocompatible magnetic fluids leave been studied in order to determine the size of magnetic particles and their colloidal stability. The results of magnetorheological measurements at room temperature and measurements of the frequency-dependent complex magnetic susceptibility indicate that the fluids have good stability acid that the particles are finely dispersed without aggregation. The mean particle diameter for physiology-solution-based magnetic fluid, estimated from measurements of anisotropy of the magnetic susceptibility, was found to be 9.4nm. This value is in good agreement with ail estimate of 11.6nm obtained from transmission electron microscopy (TEM) particularly when allowance is made for the thickness of surfactant layer (approx. 2nm).
引用
收藏
页码：A281 / A284
页数：4
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