A synthetic route to size-controlled fcc and fct FePt nanoparticles

Luciano E M Howard; H Loc Nguyen; Sean R Giblin; Brian K Tanner; Ian Terry; Andrew K Hughes; John S O Evans

doi:10.1021/ja051669e

A synthetic route to size-controlled fcc and fct FePt nanoparticles

J Am Chem Soc. 2005 Jul 27;127(29):10140-1. doi: 10.1021/ja051669e.

Authors

Luciano E M Howard¹, H Loc Nguyen, Sean R Giblin, Brian K Tanner, Ian Terry, Andrew K Hughes, John S O Evans

Affiliation

¹ Department of Chemistry and Physics, University Science Laboratories, University of Durham, South Road, DH1 3LE, UK.

PMID: 16028904
DOI: 10.1021/ja051669e

Abstract

We report here a new synthetic route to FePt nanoparticles using a stoichiometric mixture of Na2Fe(CO)4 and Pt(acac)2. The structure of FePt nanoparticles, their size, chemical composition, and magnetic property can be controlled by various synthetic parameters, such as the solvent type, nature, and molar ratio of surfactants and stabilizers, synthesis temperature, and purification process. Partially ordered fct (L10) nanoparticles with room temperature magnetic coercivity can be synthesized directly in tetracosane solution at 389 degrees C. The fcc FePt synthesized in nonadecane can be transformed into the magnetically important fct phase at 430 degrees C without significant particle sintering.