Ion synthesis and FMR studies of iron and cobalt nanoparticles in polyimides

✍ Scribed by B.Z Rameev; F Yıldız; B Aktaş; C Okay; R.I Khaibullin; E.P Zheglov; J.C Pivin; L.R Tagirov

• Book ID: 104305918
• Publisher: Elsevier Science
• Year: 2003
• Tongue: English
• Weight: 297 KB
• Volume: 69
• Category: Article
• ISSN: 0167-9317
• DOI: 10.1016/s0167-9317(03)00317-4

✦ Synopsis

Polyimide foils were implanted with 40 keV Fe and Co to doses of 0.25-1.5310 ions / cm . Electron microscopy studies showed the formation of iron and cobalt nanoparticles in the implanted polymer layer with a thickness of about 70 nm. The size and shape of the ion-synthesized metal nanoparticles depend on the implantation parameters and subsequent thermal annealing. A ferromagnetic resonance (FMR) response was found in the iron-implanted samples as well as in the annealed cobalt and iron samples. The effective magnetization values of the metal / polymer composite layers were extracted from the FMR spectra and plotted as a function of implantation dose. The magnetic properties of the iron and cobalt nanoparticles in polyimide are compared and discussed.