Synthesis of Monodisperse FePt Nanoparticles at a Low Temperature

Hui Ping Shao; Yu Qiang Huang; Hyo Sook Lee; Yong Jae Suh; Chong Oh Kim

doi:10.4028/www.scientific.net/SSP.124-126.899

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HomeSolid State PhenomenaSolid State Phenomena Vols. 124-126Synthesis of Monodisperse FePt Nanoparticles at a...

Synthesis of Monodisperse FePt Nanoparticles at a Low Temperature

Abstract:

Monodisperse FePt nanoparticles were synthesized by thermal decomposition of Fe(CO)5 and reduction of Pt(acac)2 at low temperature of 160–180 °C by using kerosene as a solvent. The average sizes of the synthesized particles ranged from 2.2 to 4.4 nm. Thermal annealing of the as-prepared FePt particles at 700 °C for 1 h transformed the crystalline structure of the particles from a disordered face-centered cubic to an ordered face-centered tetragonal. This change led to a significant increase in coercivity from 153.37 to 2273.22 Oe and in saturated magnetization from 26.86 to 41.21 emu/g.

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Solid State Phenomena (Volumes 124-126)

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899-902

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.124-126.899

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Online since:

June 2007

Authors:

Hui Ping Shao, Yu Qiang Huang, Hyo Sook Lee, Yong Jae Suh, Chong Oh Kim

Keywords:

FePt Alloy, Kerosene, Low-Temperature, Nanoparticle

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