The effect of NaCl prepared by ultra-sonic vibration on Sintering of annealed FePt nanoparticles

FePt nanoparticles were synthesis via high-temperature solution phase. Monodispersed 3.5 nm FePt nanoparticles were first obtained by reduction of FeCl2.4H2O and Pt(acac)2. These preformed FePt nanoparticles were then combined with NaCl to prevent from sintering after annealing. The 1 micron salt pa...

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Bibliographic Details
Published in:Journal of physics. Conference series 2009-03, Vol.153 (1), p.012050
Main Authors: Farahmandjou, M, Sebt, S A, Parhizgar, S S, Aberomand, P, Akhavan, M
Format: Article
Language:English
Subjects:
Annealing
High temperature
Intermetallic compounds
Iron chlorides
Iron compounds
Magnetic properties
Nanoparticles
Physics
Platinum compounds
Sintering
Vibration
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Summary:FePt nanoparticles were synthesis via high-temperature solution phase. Monodispersed 3.5 nm FePt nanoparticles were first obtained by reduction of FeCl2.4H2O and Pt(acac)2. These preformed FePt nanoparticles were then combined with NaCl to prevent from sintering after annealing. The 1 micron salt particles were fabricated by ultra-sonic vibration method and used as the separating media. Annealing studies show that these salt-matrix FePt nanoparticles are stable after annealing at 700 °C for 4 h. The annealed FePt particles diameter increases from 4 to 25 nm as observed by TEM. The magnetic properties are largely affected by annealing temperature. The role of these salt particles on sintering of annealed FePt nanoparticles has been investigated.
ISSN:1742-6596
1742-6588
1742-6596
DOI:10.1088/1742-6596/153/1/012050