Eur. Phys. J. D (2013) 67: 71
https://doi.org/10.1140/epjd/e2013-30504-1

Regular Article

Monolayers of spin-coated L1₀ FePt nanoparticles

¹ Department of Physics, Tarbiat Modares University, 14115-111 Tehran, Iran
² Physics Research Center, Science and Research Branch, Islamic Azad University, 14665-678 Tehran, Iran

^a e-mail: azarkharman@gmail.com
^b e-mail: saievare@modares.ac.ir

Received: 15 August 2012
Received in final form: 1 January 2013
Published online: 30 April 2013

Abstract

Monolayers of FePt nanoparticles were synthesized on SiO₂/Si substrates by spin-coating method. The effects of spin-coating conditions on surface morphology of FePt system was studied with FE-SEM. A high temperature annealing on the FePt monolayer films resulted in phase transition from fcc into fct (L1₀ phase), while preventing nanoparticles from sintering. Furthermore, L1₀ FePt nanoparticles with an average size of 15 nm are coated on SiO₂/Si surface. Uniform nanoparticle monolayer was obtained by optimizing the experiment parameters such as spin time and controlling hexane evaporation rate.