Issue 37, 2013
From the journal:

Journal of Materials Chemistry C

Synthesis of L10 ferromagnetic CoPt nanopowders using a single-source molecular precursor and water-soluble support†

Matthew S. Wellons,a   Zheng Gai,b   Jian Shen,‡c   James Bentley,§b   James E. Wittigd  and  Charles M. Lukehart*a  

* Corresponding authors

a Department of Chemistry, Vanderbilt University, Nashville, Tennessee 37235, USA
E-mail: chuck.lukehart@vanderbilt.edu
Fax: +1 615 3431234
Tel: +1 615 3222935

b Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA

c Material Sciences and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA

d Department of Electrical Engineering and Computer Science, Vanderbilt University, Nashville, Tennessee 37235, USA

Abstract

Reductive decomposition of CoPt(CO)4(dppe)Me/NaCl composite powder (2 : 98 CoPt precursor : NaCl mass ratio) at 650 °C under getter gas (9 : 1 N2/H2) gives black CoPt/NaCl nanocomposites with minimal CoPt nanoparticle coalescence. Aqueous dissolution of the NaCl support permits isolation of ferromagnetic L10 CoPt nanoparticles of ca. 11 nm average diameter as free-flowing black powders. As-prepared CoPt nanopowders exhibit moderate coercivity (4.0 kOe) at 300 K and high coercivity (26.0 kOe) at 5 K consistent with formation of polydisperse L10 CoPt nanoparticles having high purity and high crystallinity. Co1Pt1 nanoparticles are formed with good control of alloy stoichiometry using a single-source precursor by a convenient, scalable single-step process.

Graphical abstract: Synthesis of L10 ferromagnetic CoPt nanopowders using a single-source molecular precursor and water-soluble support

About
Cited by
Related
Download options Please wait...

Supplementary files

Article information

DOI
https://doi.org/10.1039/C3TC31232A
Article type
Paper
Submitted
26 Jun 2013
Accepted
05 Aug 2013
First published
07 Aug 2013
This article is Open Access
Creative Commons BY license

J. Mater. Chem. C, 2013,1, 5976-5980

Permissions

Request permissions

Synthesis of L10 ferromagnetic CoPt nanopowders using a single-source molecular precursor and water-soluble support

M. S. Wellons, Z. Gai, J. Shen, J. Bentley, J. E. Wittig and C. M. Lukehart, J. Mater. Chem. C, 2013, 1, 5976 DOI: 10.1039/C3TC31232A

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements