Cadmium-ferrite-based magnetic fluid: birefringence and transmission electron microscopy investigation

Author

Morais, P.C. ; Silva, O. ; Gravina, P.P. ; Figueiredo, L.C. ; Lima, E.C.D. ; Silva, L.P. ; Azevedo, R.B. ; Neto, K. Skeff

Author_Institution

Inst. de Fisica, Univ. de Brasilia, Brasilia-DF, Brazil

Volume

39

Issue

5

fYear

2003

Firstpage

2639

Lastpage

2641

Abstract

In this paper, a new hydrocarbon-based magnetic fluid containing CdFe₂O₄ nanoparticles was investigated using static magnetic birefringence (SMB) and transmission electron microscopy. Inclusion of the dependence of the birefringence signal upon both the magnetic permeability and the formation of chain-like structures yields excellent agreement between the SMB data and the model used to fit them.

Keywords

birefringence; cadmium compounds; ferrites; magnetic fluids; magnetic particles; magnetic permeability; nanoparticles; transmission electron microscopy; CdFe₂O₄; cadmium-ferrite-based magnetic fluid; hydrocarbon-based magnetic fluid; magnetic permeability; nanoparticles; static magnetic birefringence; transmission electron microscopy; Birefringence; Cadmium; Ferrites; Magnetic force microscopy; Magnetic liquids; Nanoparticles; Optical modulation; Permeability; Saturation magnetization; Transmission electron microscopy;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2003.815537

Filename

1233169