Oxidation of FePt nanoparticles

Chemically disordered ∼3–7-nm-diameter FePt nanoparticles are synthesized using the airless operation technique based on decomposition of iron pentacarbonyl and reduction of platinum acetylacetonate. The particle solution is then washed and subsequently deposited onto a thermally oxidized Si substra...

Full description

Saved in:
Bibliographic Details
Published in:Journal of magnetism and magnetic materials 2003-10, Vol.266 (1), p.96-101
Main Authors: Liu, Chao, Klemmer, Timothy J., Shukla, Nisha, Wu, Xiaowei, Weller, Dieter, Tanase, Mihaela, Laughlin, David
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
FePt
Fine-particle systems
L1 0 Phase
Magnetic nanoparticles
Magnetic properties and materials
Oxidation
Phase transformation
Physics
Small particles and nanoscale materials
Studies of specific magnetic materials
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Chemically disordered ∼3–7-nm-diameter FePt nanoparticles are synthesized using the airless operation technique based on decomposition of iron pentacarbonyl and reduction of platinum acetylacetonate. The particle solution is then washed and subsequently deposited onto a thermally oxidized Si substrate. Nanoparticle assemblies are formed after solvent evaporation. The samples are heat-treated using rapid thermal annealing at 650°C for 30 min, in an atmosphere of Ar gas with less than 1 ppm of O 2. Oxidation has to be avoided to obtain the FePt L1 0 phase. Other crystalline phases such as FePt 3 (L1 2), magnetite Fe 3O 4, hematite Fe 2O 3 and FCC Pt are obtained if oxygen is present.
ISSN:0304-8853
DOI:10.1016/S0304-8853(03)00460-8