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Structural and magnetic studies of TiO2 rutile implanted with vanadium ions

Vakhitov, I. R.; Shemukhin, A. A.; Gumarov, A., I; Lyadov, N. M.; Nuzhdin, V., I; Faizrakhmanov, I. A.; Okay, C.; Rameev, B. Z.; Tagirov, L. R.; Khaibullin, R., I


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  <dc:creator>Vakhitov, I. R.</dc:creator>
  <dc:creator>Shemukhin, A. A.</dc:creator>
  <dc:creator>Gumarov, A., I</dc:creator>
  <dc:creator>Lyadov, N. M.</dc:creator>
  <dc:creator>Nuzhdin, V., I</dc:creator>
  <dc:creator>Faizrakhmanov, I. A.</dc:creator>
  <dc:creator>Okay, C.</dc:creator>
  <dc:creator>Rameev, B. Z.</dc:creator>
  <dc:creator>Tagirov, L. R.</dc:creator>
  <dc:creator>Khaibullin, R., I</dc:creator>
  <dc:date>2019-01-01</dc:date>
  <dc:description>Single crystal (100) and (001) TiO2 rutile plates were implanted with vanadium 40 keV ions to the fluence of 1.5 x 10(17) ion cm(-2). A set of samples was also annealed at high-temperature in air to restore oxygen stoichiometric content and recover the TiO2 lattice structure after the high-dose ion implantation. In addition, a control set of TiO2 rutile plates was implanted with 40 keV argon ions to the same fluence to explore the effect of radiation-induced defects on magnetic properties. Rutherford backscattering spectroscopy (RBS), x-ray photoelectron spectroscopy (XPS) and vibrating sample magnetometry (VSM) measurements were carried out to characterize the structural and magnetic properties of the vanadium-implanted TiO2. Both as-implanted and subsequently annealed V-TiO2 samples reveal ferromagnetic response at room temperature. Strong ferromagnetism observed in the vanadium-implanted (001) TiO2 plates is related to the \substitutional V4+ ions coupled by the indirect exchange via electrons trapped at oxygen vacancies, while much weaker ferromagnetism in the (100)oriented plates and the Ar-implanted samples is attributed to lattice defects induced by the high-dose ion irradiation. Suppression of the ferromagnetic response in the vanadium-implanted (001) TiO2 after the thermal treatment is explained by filling in the oxygen vacancies due to oxygen diffusion during annealing in air atmosphere.</dc:description>
  <dc:identifier>https://aperta.ulakbim.gov.trrecord/67983</dc:identifier>
  <dc:identifier>oai:zenodo.org:67983</dc:identifier>
  <dc:rights>info:eu-repo/semantics/openAccess</dc:rights>
  <dc:rights>http://www.opendefinition.org/licenses/cc-by</dc:rights>
  <dc:source>MATERIALS RESEARCH EXPRESS 6(11)</dc:source>
  <dc:title>Structural and magnetic studies of TiO2 rutile implanted with vanadium ions</dc:title>
  <dc:type>info:eu-repo/semantics/article</dc:type>
  <dc:type>publication-article</dc:type>
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