Title : ( FePt3/CoFe2O4 core/shell nanostructures and their magnetic properties )
Authors: Hossein Akbari-Student , Seyed Ali Sebt , Hadi Arabi , Hossein Zeynali-Student , Mohhamad Elahi ,
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Abstract
Monodisperse 2 nm Fe 100x Pt x nanoparticles were synthesized using polyol process. As-synthesized FePt (x = 37) and FePt 3 (x = 66) nanoparticles have the chemically-disordered face-centred cubic (fcc) structure. To achieve ordered structure (L1 2 phase), high-temperature annealing is required. During annealing, coalescence occurs and large agglomeration is formed with multi-domain particles. Core/shell structure, CoFe 2 O 4 as a shell, is prepared to prevent the uncontrolled agglomeration. The shell thickness of CoFe 2 O 4 is changed and controlled by varying ratio of initial precursor. The results show a decrease in coercivity by increasing shell thickness. This reveals effective exchange coupling between core and shell and confirms that shell thickness has a major role in magnetic properties of FePt 3 /CoFe 2 O 4 nanoparticles.
Keywords
, FePt3/CoFe2O4 core/shell, nanostructures, magnetic properties
@article{paperid:1033578,
author = {Hossein Akbari-Student and Seyed Ali Sebt and Arabi, Hadi and Hossein Zeynali-Student and Mohhamad Elahi},
title = {FePt3/CoFe2O4 core/shell nanostructures and their magnetic properties},
journal = {Chemical Physics Letters},
year = {2012},
volume = {524},
number = {2},
month = {December},
issn = {0009-2614},
pages = {78--83},
numpages = {5},
keywords = {FePt3/CoFe2O4 core/shell; nanostructures; magnetic properties},
}
%0 Journal Article
%T FePt3/CoFe2O4 core/shell nanostructures and their magnetic properties
%A Hossein Akbari-Student
%A Seyed Ali Sebt
%A Arabi, Hadi
%A Hossein Zeynali-Student
%A Mohhamad Elahi
%J Chemical Physics Letters
%@ 0009-2614
%D 2012
