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.S.

Author_Institution

Inst. de Fisica, Brasilia Univ., Brazil

fYear

2003

fDate

March 30 2003-April 3 2003

Abstract

In this paper, a new hydrocarbon based MF sample containing cadmium ferrite nanoparticles surface-coated with oleic acid is investigated using TEM and SMB. In contrast to all MF samples based on spinel ferrite nanoparticles this new MF sample is relatively transparent at particle concentration in the range of 10/sup 16/ to 10/sup 17/ particle/cm/sup 3/. Further, the saturation birefringence is one order of magnitude higher than any other MF sample ever reported. This two points are extremely interesting, making the cadmium ferrite based MF and exceptional candidate for applications in optical devices.

Keywords

cadmium compounds; ferrites; magnetic fluids; magneto-optical effects; nanoparticles; transmission electron microscopy; CdFe/sub 2/O/sub 4/; TEM; cadmium-ferrite-based magnetic fluid; hydrocarbon based magnetic fluids; static magnetic birefringence; transmission electron microscopy; Birefringence; Cadmium; Ferrites; Hydrocarbons; Magnetic force microscopy; Magnetic liquids; Nanoparticles; Optical devices; Transmission electron microscopy; Ultraviolet sources;

fLanguage

English

Publisher

ieee

Conference_Titel

Magnetics Conference, 2003. INTERMAG 2003. IEEE International

Conference_Location

Boston, MA, USA

Print_ISBN

0-7803-7647-1

Type

conf

DOI

10.1109/INTMAG.2003.1230603

Filename

1230603