Title :
Preparation of acicular α-Fe nanoparticles in tubular lecithin colloids
Author :
Cain, Jason L. ; Nikles, David E.
Author_Institution :
Dept. of Chem., Alabama Univ., Tuscaloosa, AL, USA
fDate :
9/1/1996 12:00:00 AM
Abstract :
Acicular α-Fe nanoparticles were prepared by borohydride reduction of Fe2+ in tubular lecithin reverse micellular solutions. Reduction of low concentration (0.025 or 0.05 M FeCl2 ) in the presence of a 1200 Oe magnetic field gave mostly spherical particles with about 20% acicular particles. The amount of acicular particles varied with reaction conditions. The acicular particles had lengths ranging from 100 to 600 nm and aspect ratios of at least 6:1
Keywords :
colloids; ferromagnetic materials; iron; magnetic fluids; magnetic particles; nanostructured materials; particle size; reduction (chemical); 100 to 600 nm; Fe; Fe2+; FeCl2; acicular α-Fe nanoparticles; acicular particles; aspect ratios; borohydride reduction; magnetic field; preparation; reaction conditions; spherical particles; tubular lecithin colloids; tubular lecithin reverse micellular solutions; Coercive force; Couplings; Ethanol; Iron; Magnetic fields; Magnetic hysteresis; Nanoparticles; Powders; Transmission electron microscopy; X-ray diffraction;
Journal_Title :
Magnetics, IEEE Transactions on
