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

Rameev B., Yildiz F., Aktas B., Okay C., Khaibullin R., Zheglov E., ...Daha Fazla

MICROELECTRONIC ENGINEERING, cilt.69, sa.2-4, ss.330-335, 2003 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 69 Sayı: 2-4
  • Basım Tarihi: 2003
  • Doi Numarası: 10.1016/s0167-9317(03)00317-4
  • Dergi Adı: MICROELECTRONIC ENGINEERING
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.330-335
  • Anahtar Kelimeler: ion implantation, magnetic nanoparticles, granular magnetic films, ferromagnetic resonance, FERROMAGNETIC-RESONANCE, SPIN DISORDER, FILMS, FE
  • Marmara Üniversitesi Adresli: Evet

Özet

Polyimide foils were implanted with 40 keV Fe+ and Co+ to doses of 0.25-1.5x10(17) ions/cm(2). 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. (C) 2003 Elsevier B.V. All rights reserved.