Title :
Curie temperature enhancement in Fe3C nanoparticles made by laser pyrolysis
Author :
Grimes, C.A. ; Horn, J.L. ; Bush, G.G. ; Allen, J.L. ; Eklund, P.C.
Author_Institution :
Dept. of Electr. Eng., Kentucky Univ., Lexington, KY, USA
fDate :
9/1/1997 12:00:00 AM
Abstract :
We report on the magnetic properties of passivated and unpassivated ferromagnetic Fe3C nanoparticles made by laser pyrolysis. The particles have a Curie temperature well above that measured for the bulk material, and a room temperature coercive force of approximately 600 Oe. The nanoparticles offer the possibility of high temperature magnets, sensors, or materials for temperature dependent EMI shielding
Keywords :
Curie temperature; coercive force; ferromagnetic materials; iron compounds; magnetic particles; magnetic sensors; magnetic shielding; nanostructured materials; passivation; permanent magnets; pyrolysis; Curie temperature enhancement; Fe3C; Fe3C nanoparticles; high temperature magnets; laser pyrolysis; magnetic properties; materials; passivated ferromagnetic Fe3C nanoparticles; room temperature coercive force; sensors; temperature dependent EMI shielding; unpassivated ferromagnetic Fe3C nanoparticles; Coercive force; Force measurement; Iron; Magnetic materials; Magnetic properties; Nanoparticles; Optical materials; Particle measurements; Temperature dependence; Temperature sensors;
Journal_Title :
Magnetics, IEEE Transactions on
