On the concentration dependence of Faraday rotation in magnetic fluids

Author

Yusuf, N.A. ; Abu-Aljarayesh, I. ; Rousan, A.A. ; El-Ghanem, H.M.

Author_Institution

Dept. of Phys., Yarmouk Univ., Irbid, Jordan

Volume

26

Issue

5

fYear

1990

fDate

9/1/1990 12:00:00 AM

Firstpage

2852

Lastpage

2855

Abstract

Faraday rotation and magnetization measurements at room temperature were undertaken on Fe₃O₄ particle magnetic fluids with different concentrations. The results show that Faraday rotation follows a Langevin-type behavior with the applied magnetic field. The results also show that Faraday rotation increases with the concentration of the sample and tends to saturate at higher fields for higher concentration. By comparing the optical and magnetic data the role of chain formation in Faraday rotation is discussed. From these measurements, the chain length at given field is found to be linear with the concentration of the sample, a result that is in agreement with recent studies on the concentration dependence of chain formation

Keywords

Faraday effect; iron compounds; magnetic fluids; magnetisation; 293 K; Faraday rotation; Fe₃O₄; Langevin-type behavior; applied magnetic field; chain formation; concentration dependence; magnetic fluids; magnetization measurements; room temperature; Magnetic analysis; Magnetic field measurement; Magnetic liquids; Optical films; Optical retarders; Optical saturation; Physics; Rotation measurement; Saturation magnetization; Temperature;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.104896

Filename

104896