Geodesic
Study of the structural and magnetic properties of rutile ($\mathrm{TiO}_2$) heavily implanted with iron ions
Učënye zapiski Kazanskogo universiteta. Seriâ Fiziko-matematičeskie nauki, Uchenye Zapiski Kazanskogo Universiteta. Seriya Fiziko-Matematicheskie Nauki, Tome 152 (2010) no. 3, pp. 7-11 Cet article a éte moissonné depuis la source Math-Net.Ru

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Single-crystalline (100)- and (001)-films of titanium dioxide ($\mathrm{TiO}_2$) were implanted by Fe ions with an energy of 40 keV with a high dose of irradiation of $1.5\cdot10^{17}$ ion/cm$^2$. Structural and magnetic properties of the surface layer of the irradiated samples were studied using scanning electron microscopy and inductive magnetometry. As a result of high-dose implantation the originally transparent $\mathrm{TiO}_2$ films became grey with strong metallic luster due to the formation of metal iron nanoparticles in the irradiated surface layer of rutile. Magnetic measurements showed that the iron-implanted samples are ferromagnetic at room temperature. The ferromagnetism shows easy-plane anisotropy, which is typical for thin ferromagnetic films. In addition, 2- and 4-fold magnetic anisotropy in the surface plane was revealed for the (100)- and (001)-samples, respectively. The latter observation indicates that the iron nanoparticles synthesized by ion implantation are coherently embedded in the tetragonal crystal structure of rutile.
Mots-clés : ion implantation, ferromagnetism
Keywords: magnetic anisotropy. 
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     title = {Study of the structural and magnetic properties of rutile ($\mathrm{TiO}_2$) heavily implanted with iron ions},
     journal = {U\v{c}\"enye zapiski Kazanskogo universiteta. Seri\^a Fiziko-matemati\v{c}eskie nauki},
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I. R. Vakhitov; V. I. Nujdin; Y. N. Osin; R. I. Khaibullin. Study of the structural and magnetic properties of rutile ($\mathrm{TiO}_2$) heavily implanted with iron ions. Učënye zapiski Kazanskogo universiteta. Seriâ Fiziko-matematičeskie nauki, Uchenye Zapiski Kazanskogo Universiteta. Seriya Fiziko-Matematicheskie Nauki, Tome 152 (2010) no. 3, pp. 7-11. http://geodesic.mathdoc.fr/item/UZKU_2010_152_3_a0/

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