Issue 20, 2014
From the journal:

Nanoscale

Direct chemical synthesis of L10-FePtAu nanoparticles with high coercivity†

Yongsheng Yu,*ab   P. Mukherjee,a   Yuan Tian,c   X.-Z. Li,a   J. E. Shieldc  and  D. J. Sellmyer*a  

* Corresponding authors

a Nebraska Center for Materials and Nanoscience & Department of Physics and Astronomy, University of Nebraska-Lincoln, Lincoln, NE 68588, USA
E-mail: Yongshengyu80@gmail.com, dsellmyer@unl.edu
Fax: +1 402-472-6148
Tel: +1 402-472-2407

b School of Materials Science and Engineering, Jilin University, Changchun 130025, China

c Mechanical and Materials Engineering & Nebraska Center for Materials and Nanoscience, University of Nebraska-Lincoln, Lincoln, Nebraska 68588, USA

Abstract

We report a facile synthesis of hard magnetic L10-FePtAu nanoparticles by coreduction of Fe(acac)3, Pt(acac)2 (acac = acetylacetonate) and gold acetate in oleylamine. In the current reaction condition, NP sizes are controlled to be 5.5 to 11.0 nm by changing the amount of Au doping. When the Au composition in the NPs is higher than 14%, the hard magnetic NPs are directly obtained without any annealing. The highest coercivity of 12.15 kOe at room temperature could be achieved for the NPs with 32% Au doping, which is much higher than the coercivities reported by the previous studies on solution-synthesized FePt nanoparticles. The reported one-pot synthesis of L10-FePtAu NPs may help to build superstrong magnets for magnetic or data-storage applications.

Graphical abstract: Direct chemical synthesis of L10-FePtAu nanoparticles with high coercivity

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Article information

DOI
https://doi.org/10.1039/C4NR02345E
Article type
Paper
Submitted
30 Apr 2014
Accepted
17 Jul 2014
First published
24 Jul 2014

Nanoscale, 2014,6, 12050-12055

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Direct chemical synthesis of L10-FePtAu nanoparticles with high coercivity

Y. Yu, P. Mukherjee, Y. Tian, X.-Z. Li, J. E. Shield and D. J. Sellmyer, Nanoscale, 2014, 6, 12050 DOI: 10.1039/C4NR02345E

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