A NEW SPECTROMETRIC METHOD, USING A MAGNETOOPTICAL EFFECT, TO STUDY MAGNETIC LIQUIDS

被引：19

作者：

DELAUNAY, L ^{[1
]}

NEVEU, S ^{[1
]}

NOYEL, G ^{[1
]}

MONIN, J ^{[1
]}

机构：

[1] UNIV PARIS 06, PHYSICOCHIM INORGAN LAB, CNRS, UA 419, F-75252 PARIS 05, FRANCE

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1995年 / 149卷 / 03期

关键词：

D O I：

10.1016/0304-8853(95)00420-3

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present an original polarimetric method to study the magnetic relaxation of ferrofluids. The Brownian relaxation of three ferrofluids with Fe2CoO4 particles dispersed in water, dibutyl phthalate and diethylene glycol is presented and compared with the theoretical model of Debye adapted to the magnetism. The results show that this system has a good sensitivity even at low volume concentration of particles and under low ac magnetic field. The analysis of the relaxation parameters leads to a good estimation of particles diameter and put in evidence a distribution of relaxation time.

引用

页码：L239 / L245

页数：7

共 22 条

[1] LONGITUDINAL MAGNETO-OPTICAL EFFECT OF FERROFLUIDS [J].