Title :
Preparation of cellulose-based biocompatible suspension of nano-sized γ-AlxFe2-xO3
Author :
Prasad, N.K. ; Panda, D. ; Singh, S. ; Bahadur, D.
Author_Institution :
Metall. Eng. & Mater. Sci., Indian Inst. of Technol., Mumbai, India
Abstract :
We have been able to synthesize γ-AlxFe2-xO3 (0.07≤x≤1) in the size range 5-30 nm by wet chemical method. X-ray diffraction patterns confirm that all the as prepared samples were mono crystalline except the one with x=1.0 which was amorphous. With Al3+ substitution average size of the particles ranges between 5 and 30 nm. Al3+ has a tendency to occupy the octahedral site of spinel structure reducing the net magnetization. This was confirmed from the Mössbauer spectra and magnetization measurement data. We could make suspension of γ-Al0.07Fe1.93O3 in cellulose dispersed water. This showed a good degree of biocompatibility with HeLa cells.
Keywords :
Mossbauer effect; X-ray diffraction; aluminium compounds; biological specimen preparation; chemical exchanges; iron compounds; magnetic particles; magnetisation; nanoparticles; particle size; suspensions; 5 to 30 nm; AlFeO3; HeLa cells; Mossbauer spectra; X-ray diffraction; cellulose-based biocompatible suspension; crystalline patterns; magnetic hyperthermia; magnetization measurement; nanoparticles; spinel structure; wet chemical method; Amorphous magnetic materials; Anti-freeze; Chemical technology; Iron; Magnetic field measurement; Magnetic levitation; Magnetization; Materials science and technology; Temperature; X-ray diffraction; Biocompatible; MÖssbauer spectra; magnetic hyperthermia; nanoparticles;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2005.855349
