Title :
Structural and Magnetic Properties of Chemically Synthesized FexPt100-x Nanoparticles with Controlled Particle Size and Shape
Author :
Huang, Y. ; Colak, L. ; Wang, H. ; Ni, C. ; Weller, D.
Author_Institution :
Delaware Univ., Newark
Abstract :
FexPt100-x nanoparticles were synthesized by thermal decomposition of iron pentacarbonyl and reduction of platinum acetylacetonate. The structural and magnetic properties of the nanoparticles with controlled particle size and shape were studied. The nanoparticles show superparamagnetic behavior. The particles also show hard magnetic properties with coercivity of more than 12 kOe after annealing. HRTEM and Mossbauer studies were carried out to investigate the microstructural development in annealed samples.
Keywords :
Mossbauer effect; annealing; coercive force; crystal microstructure; ferromagnetic materials; iron alloys; magnetic particles; nanoparticles; nanotechnology; particle size; permanent magnets; platinum alloys; pyrolysis; reduction (chemical); superparamagnetism; transmission electron microscopy; FePt; Mossbauer studies; TEM; annealing; chemically synthesized nanoparticles; coercivity; hard magnetic properties; iron pentacarbonyl; microstructural development; particle shape; particle size; platinum acetylacetonate; reduction; superparamagnetic behavior; thermal decomposition; Annealing; Chemicals; Coercive force; Iron; Magnetic properties; Nanoparticles; Platinum; Shape control; Size control; Thermal decomposition;
Conference_Titel :
Magnetics Conference, 2006. INTERMAG 2006. IEEE International
Conference_Location :
San Diego, CA
Print_ISBN :
1-4244-1479-2
DOI :
10.1109/INTMAG.2006.375527
