Magnetic resonance study of zero-field-frozen magnetite-based biocompatible magnetic fluid

Author

Silveira, L.B. ; Santos, J.G. ; Pelegrini, F. ; Gansau, C. ; Buske, N. ; Morais, P.C.

Author_Institution

Inst. de Fisica, Brasilia Univ., Brazil

fYear

2003

fDate

March 30 2003-April 3 2003

Abstract

In this paper, a biocompatible MF sample was investigated using X-band MR. The resonance linewidth broadening (/spl Delta/H/sub R/) and the resonance field (H/sub R/) was investigated as a function of temperature (T), at different nonparticle concentration. The biocompatible MF sample used in this study is based on magnetic nanoparticle (9.4 nm is average diameter) coated with dextran. After precipitation in alkaline medium, magnetite nanoparticles were surface coated to produce stable biocompatible MF samples at physiological pH and salinity.

Keywords

X-ray spectra; magnetic anisotropy; magnetic fluids; magnetic moments; magnetic resonance; nanoparticles; pH; precipitation (physical chemistry); spectral line broadening; 9.4 nm; X-band MR; magnetic nanoparticle; magnetic resonance; physiological pH; precipitation; resonance linewidth broadening; salinity; zero-field-frozen magnetite-based biocompatible magnetic fluid; Animals; Energy barrier; Gyromagnetism; Magnetic anisotropy; Magnetic liquids; Magnetic resonance; Perpendicular magnetic anisotropy; Temperature dependence; Temperature distribution; Temperature sensors;

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.2003.1230604

Filename

1230604