Title :
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
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;
Conference_Titel :
Magnetics Conference, 2003. INTERMAG 2003. IEEE International
Conference_Location :
Boston, MA, USA
Print_ISBN :
0-7803-7647-1
DOI :
10.1109/INTMAG.2003.1230604
