Monolayer deposition of L10 FePt nanoparticles via electrospray route |
| |
| Authors: | Hye Moon Lee Soon Gil Kim Isao Matsui Toru Iwaki Ferry Iskandar I Wuled Lenggoro Kikuo Okuyama |
| |
| Institution: | 1. Powder Materials Research Center, Materials Research Institute, Korea Institute of Machinery and Materials, Changwon 641-831, South Korea;2. Department of Chemical Engineering, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima 739-8527, Japan;3. Corporate Research and Development Center, Toshiba Corporation, Kawasaki 212-8582, Japan;4. Joint Research Center for Nanotechnology Particle Project, Japan Chemical Innovation Institute, 1-3-1 Kagamiyama, Higashi-Hiroshima 739-8530, Japan |
| |
| Abstract: | The deposition monolayers of L10 FePt nanoparticles via an electrospraying method and the magnetic properties of the deposited film were studied. FePt nanoparticles in a size of around 2.5 nm in diameter, prepared by a liquid process, were used as a precursor. The size of the deposited particles can be controlled up to 35 nm by controlling the sprayed droplet size that is formed by adjusting the precursor concentration and the precursor flow rate. The droplets were heated in a tubular furnace at a temperature of up to 900 °C to remove all organic compounds and to transform the FePt particles from disordered face centered cubic to an ordered FCT phase. Finally, the particles were deposited in the form of a monolayer film on a silicon substrate by electrostatic force and characterized by scanning electron microscopy. The monolayer of particles was obtained by the high charge on particles obtained during the electrospraying process. The magnetic properties of the monolayer were investigated by magneto-optic Kerr effect measurements. Coercivity up to 650 Oe for a film consisting of 35 nm L10 FePt nanoparticles was observed after heat treatment at a temperature of 800 °C. |
| |
| Keywords: | 75 50 Bb 75 50 Ss 75 60 Ej 75 70 Ak 82 33 Ya |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
