Ion synthesis of thin granular ferromagnetic films in polymethylmethacrylate

Optical Extinction of Metal Nanoparticles Synthesized in Polymer by Ion Implantation

“…Thus, in PMMA, the implantation dose, being responsible for the amount of the implant, influences directly the MNP size but does not affect the implant distribution profile at present conditions. As was noted above, the particles nucleate at a dose of ~10 16 ion/cm 2 (low-dose implantation). For silver in PMMA, this dose provides MNPs with a size of about 2 nm.…”

Features of FMR spectra observed in granular films formed by Fe+ implantation into PMMA

“…The samples were implanted with 40 keV Fe + ions at the ion current density of 4 p.A/cm z, the dose of impIantation being 1.2-1017 ion/cm 2. At this dose variously shaped and sized fine-dispersed particles of second phase were formed in a near-surface layer [7]. The spectra of magnetic resonance were registered at room temperature on a VarŸ radiospectrometer with a working frequency of 9.5 GHz.…”

“…Our previous diffraction investigation [9] has shown that the basic phase in the synthesized film is ferromagnetic a-Fe. Minor parts of oxide Fe304 and diamondlike carbon have been also revealed.…”

Chemical aspects of implantation of high-energy ions into polymeric materials

“…111 The reduction conditions which are created in the surface layer during the bombardment of a polymeric target by metal ions favours the formation of metal nanophase. 112 This process was studied taking polymethylphenylsiloxane and epoxy resins implanted with Ag + , Fe + and Co + ions as examples (see Refs 113 ± 118). It was found that the morphology of the newly formed metal nanophase is to a great extent controlled by the viscosity of the polymer matrix.…”