Title :
Preparation of acicular α-Fe nanoparticles in a lamellar liquid crystalline phase
Author :
Chen, Jianping ; Nikles, David E.
Author_Institution :
Center for Mater. for Inf. Technol., Alabama Univ., Tuscaloosa, AL, USA
fDate :
9/1/1996 12:00:00 AM
Abstract :
Acicular α-Fe nanoparticles were prepared by sodium borohydride reduction of ferrous chloride in the presence of the liquid crystalline system, C12EO4/water. The shape of the acicular particles was templated by the colloid and a magnetic field. The acicular particles obtained from the lamellar phase were 50~150 nanometers long and 5 nanometers wide. The product also included some spherical particles of 10~15 nanometers in diameter. The saturation magnetization was 94 emu/g and the coercivity was 420 Oe
Keywords :
coercive force; ferromagnetic materials; iron; magnetic fluids; magnetic particles; magnetisation; nanostructured materials; reduction (chemical); α-Fe acicular nanoparticles; 10 to 15 nm; 50 to 150 nm; Fe; NaBH4; coercivity; colloids; ferrous chloride reduction; lamellar liquid crystalline phase; saturation magnetization; spherical particles; Colloidal crystals; Crystallization; Iron; Magnetic fields; Magnetic materials; Nanoparticles; Oxidation; Shape; Telephony; X-ray diffraction;
Journal_Title :
Magnetics, IEEE Transactions on
