Optical and magnetic properties of silica implanted with N{sup +} and Fe{sup +}

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Silica platelets (Corning 7940) were implanted sequentially with N{sup +} at 52 keV to different doses ranging from 0 to 1.2{times}10{sup 17} ions cm{sup {minus}2} and then with Fe{sup +} at 160 keV to a dose of 6{times}l0{sup 16} ions cm{sup {minus}2}. The optical absorption decreased with increasing N{sup +} dose at photon energies ranging from 1.4 to 6.5 eV. The relative intensity, S(0{degrees}), of the ferromagnetic resonance absorption and its resonance field, H{sub s}(0{degrees}), at {theta}=0{degrees} were larger than S(90{degrees}) and H{sub s}(90{degrees}), at {theta}=0{degrees}, where {theta} is the angle between the applied magnetic field and the normal to ... continued below

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7 p.

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Isobe, T.; Weeks, R.A. & Zuhr, R.A. December 1, 1995.

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  • Isobe, T. Keio Univ., Yokohama (Japan). Faculty of Science and Engineering
  • Weeks, R.A. Vanderbilt Univ., Nashville, TN (United States). Applied Science and Engineering
  • Zuhr, R.A. Oak Ridge National Lab., TN (United States)

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Silica platelets (Corning 7940) were implanted sequentially with N{sup +} at 52 keV to different doses ranging from 0 to 1.2{times}10{sup 17} ions cm{sup {minus}2} and then with Fe{sup +} at 160 keV to a dose of 6{times}l0{sup 16} ions cm{sup {minus}2}. The optical absorption decreased with increasing N{sup +} dose at photon energies ranging from 1.4 to 6.5 eV. The relative intensity, S(0{degrees}), of the ferromagnetic resonance absorption and its resonance field, H{sub s}(0{degrees}), at {theta}=0{degrees} were larger than S(90{degrees}) and H{sub s}(90{degrees}), at {theta}=0{degrees}, where {theta} is the angle between the applied magnetic field and the normal to the implanted surface. The maximum values of S(0{degrees}) and S(90{degrees}) were observed near the N/Fe atomic ratio of 0.2. At the similar atomic ratio, the differential relative intensity, S(0{degrees}){minus} S(90{degrees}), and the differential resonance field, H{sub s}(0{degrees}){minus} H{sub s}(90{degrees}), associated with the degree of magnetic interaction between the produced compounds, also showed maxima. We conclude that sequential ion-implantation of N{sup +} and Fe{sup +} into silica causes a chemical interaction to produce iron nitrides.

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7 p.

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OSTI as DE96005369

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  • Fall meeting of the Materials Research Society (MRS), Boston, MA (United States), 27 Nov - 1 Dec 1995

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  • Other: DE96005369
  • Report No.: CONF-951155--38
  • Grant Number: AC05-84OR21400
  • Office of Scientific & Technical Information Report Number: 204548
  • Archival Resource Key: ark:/67531/metadc671089

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Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • December 1, 1995

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  • June 29, 2015, 9:42 p.m.

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  • Jan. 19, 2016, 8:50 p.m.

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Isobe, T.; Weeks, R.A. & Zuhr, R.A. Optical and magnetic properties of silica implanted with N{sup +} and Fe{sup +}, article, December 1, 1995; Tennessee. (digital.library.unt.edu/ark:/67531/metadc671089/: accessed November 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.