Magnetic birefringence in copper and zinc ferrite-based ionic magnetic fluids

Author

Pereira, A.R. ; Gonçalves, G. R R ; Bakuzis, A.F. ; Morais, P.C. ; Azevedo, R.B. ; Neto, K.Skeff

Author_Institution

Inst. de Fisica, Brasilia Univ., Brazil

Volume

37

Issue

4

fYear

2001

fDate

7/1/2001 12:00:00 AM

Firstpage

2657

Lastpage

2659

Abstract

The static magnetic birefringence (SMB) of copper and zinc ferrite ionic magnetic fluids (IMFs) were investigated within the oscillating dipole-interaction anisotropy concept. The model was extended to include the magnetic texture of the contributing particle agglomerates and the field dependence of the magnetic permeability. The SMB data of samples containing particle concentration in the range of 1×10¹⁶ to 5×10¹⁶ particle/cm³ were successfully described

Keywords

birefringence; copper compounds; ferrites; magnetic anisotropy; magnetic fluids; magnetic permeability; magneto-optical effects; zinc compounds; CuFe₂O₄; ZnFe₂O₄; copper ferrite; ionic magnetic fluid; magnetic field dependence; magnetic permeability; magnetic texture; oscillating dipole interaction anisotropy; particle agglomerate; particle concentration; static magnetic birefringence; zinc ferrite; Anisotropic magnetoresistance; Atomic force microscopy; Birefringence; Copper; Magnetic anisotropy; Magnetic liquids; Nanoparticles; Permeability; Perpendicular magnetic anisotropy; Zinc;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.951265

Filename

951265