Special Issue Article

Nanoscale Research Letters

, Volume 5, Issue 3, pp 489-493

Open Access This content is freely available online to anyone, anywhere at any time.

Study on Composition Distribution and Ferromagnetism of Monodisperse FePt Nanoparticles

  • H. B. WangAffiliated withFaculty of Physics and Electronic Technology, Hubei University
  • , H. WangAffiliated withFaculty of Physics and Electronic Technology, Hubei University Email author 
  • , J. ZhangAffiliated withFaculty of Physics and Electronic Technology, Hubei University
  • , F. J. YangAffiliated withFaculty of Physics and Electronic Technology, Hubei University
  • , Y. M. XuAffiliated withDepartment of Physics, The Chinese University of Hong Kong
  • , Q. LiAffiliated withDepartment of Physics, The Chinese University of Hong Kong

Abstract

Monodisperse FePt nanoparticles with size of 4.5 and 6.0 nm were prepared by simultaneous reduction of platinum acetylacetonate and thermal decomposition of iron pentacarbonyl in benzylether. The crystallography structure, size, and composition of the FePt nanoparticles were examined by X-ray diffraction and transmission electron microscopy. Energy dispersive X-ray spectrometry measurements of individual particles indicate a broad compositional distribution in both the 4.5 and 6 nm FePt nanoparticles. The effects of compositional distribution on the phase-transition and magnetic properties of the FePt nanoparticles were investigated.

Keywords

FePt Nanoparticles Compositional distribution Magnetic properties