Chemical interaction between nitrogen and iron in silica glasses via sequential ion-implantation

Tetsuhiko Isobe, Tamotsu Toriyama, Robert A. Weeks, Raymond A. Zuhr

Research output: Contribution to journalArticle

Abstract

Silica glass plates (Corning 7940 excimer grade) were implanted sequentially with N+ at 52 keV to different doses, ranging from 0 to 1.2 × 1017 ions cm-2, and then with Fe+ at 160 keV to 6 × 1016 ions cm-2 at room temperature and 4 μA cm-2. The intensity of ferromagnetic magnetic resonance (FMR) absorption and the magnetization calculated by the angular dependence of the FMR field reach maxima at an N/Fe atomic ratio ∼0.2. Two peaks due to Fe 2p3/2 electron are observed at 707.2 ± 0.2 and 710.9 ± 0.2 eV in the x-ray photoelectron spectra. The intensity of the former relative to the latter decreases with increasing the N dose. The conversion electron Mössbauer spectrum reveals the formation of superparamagnetic iron nitride as well as the existence of Fe2+ and Fe3+ in silica when implanting N+ to 7.5 × 1015 ions cm-2 and then 57Fe+ to 6 X 1016 ions cm-2 at N/Fe = 0.125. These results suggest that sequential ion-implantation of N+ and Fe+ produces iron nitride in silica glasses.

Original languageEnglish
Pages (from-to)2144-2150
Number of pages7
JournalJournal of Materials Research
Volume13
Issue number8
Publication statusPublished - 1998 Aug

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silica glass
Fused silica
Ion implantation
ion implantation
Nitrogen
Iron
Ions
iron
nitrogen
Ferromagnetic resonance
Magnetic resonance
ferromagnetic resonance
Nitrides
nitrides
magnetic resonance
ions
interactions
dosage
Electrons
excimers

ASJC Scopus subject areas

  • Materials Science(all)

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Chemical interaction between nitrogen and iron in silica glasses via sequential ion-implantation. / Isobe, Tetsuhiko; Toriyama, Tamotsu; Weeks, Robert A.; Zuhr, Raymond A.

In: Journal of Materials Research, Vol. 13, No. 8, 08.1998, p. 2144-2150.

Research output: Contribution to journalArticle

Isobe, Tetsuhiko ; Toriyama, Tamotsu ; Weeks, Robert A. ; Zuhr, Raymond A. / Chemical interaction between nitrogen and iron in silica glasses via sequential ion-implantation. In: Journal of Materials Research. 1998 ; Vol. 13, No. 8. pp. 2144-2150.
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