Emission Mössbauer spectroscopy study of fluence dependence of paramagnetic relaxation in Mn/Fe implanted ZnO

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• 作者：H. Masenda ; S. Geburt ; K. Bharuth-Ram ; D. Naidoo…
• 关键词：ZnO ; Fe implantation ; Emission Mössbauer spectroscopy ; Spin relaxation ; Paramagnetism
• 刊名：Hyperfine Interactions
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：237
• 期：1
• 全文大小：1,144 KB
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  8.Gunnlaugsson, H.P., Mølholt, T.E., Mantovan, R., Masenda, H., Naidoo, D., Dlamini, W.B., Sielemann, R., Bharuth-Ram, K., Weyer, G., Johnston, K., Langouche, G., Ólafsson, S., Gíslason, H.P., Kobayashi, Y., Yoshida, Y., Fanciulli, M.: ISOLDE collaboration. Appl. Phys. Lett. 97, 142–501 (2010)CrossRef
  9.Mølholt, T.E., Gunnlaugsson, H.P., Johnston, K., Mantovan, R., Masenda, H., Naidoo, D., Ólafsson, S., Bharuth-Ram, K., Gislason, H.P., Langouche, G., Sielemann, R., Weyer, G.: ISOLDE Collaboration. Phys. Scr. T148, 014–006 (2012)CrossRef
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• 作者单位：H. Masenda (1)
  S. Geburt (2)
  K. Bharuth-Ram (3) (4)
  D. Naidoo (1)
  H. P. Gunnlaugsson (5) (6)
  K. Johnston (5)
  R. Mantovan (7)
  T. E. Mølholt (5)
  M. Ncube (1)
  S. Shayestehaminzadeh (8)
  H. P. Gislason (9)
  G. Langouche (6)
  S. Ólafsson (9)
  C. Ronning (2)
  ISOLDE Collaboration
  
  1. School of Physics, University of the Witwatersrand, Johannesburg, 2050, South Africa
  2. Institute of Solid State Physics, University of Jena, 07743, Jena, Germany
  3. Physics Department, Durban University of Technology, Durban, 4001, South Africa
  4. School of Chemistry and Physics, University of KwaZulu-Natal, Durban, 4000, South Africa
  5. PH Dept, ISOLDE/CERN, 1211 Geneva 23, Geneva, Switzerland
  6. KU Leuven, Instituut voor Kern-en Stralingsfysica, 3001, Leuven, Belgium
  7. Laboratorio MDM, IMM-CNR, Via Olivetti 2, 20864, Agrate Brianza, (MB), Italy
  8. Institute of Materials Chemistry, RWTH Aachen University, Kopernikusstr. 10, 52074, Aachen, Germany
  9. Science Institute, University of Iceland, Dunhaga 3,107, Reykjavík, Iceland
  
• 刊物类别：Physics and Astronomy
• 刊物主题：Physics
  Nuclear Physics, Heavy Ions and Hadrons
  Atoms, Molecules, Clusters and Plasmas
  Condensed Matter
  Surfaces and Interfaces and Thin Films
  
• 出版者：Springer Netherlands
• ISSN：1572-9540

文摘

Emission Mössbauer Spectroscopy following the implantation of radioactive precursor isotope 57Mn+ (T _1/2= 1.5 min) into ZnO single crystals at ISOLDE/CERN shows that a large fraction of 57Fe atoms produced in the 57Mn beta decay is created as paramagnetic Fe3+ with relatively long spin-lattice relaxation times. Here we report on ZnO pre-implanted with 56Fe to fluences of 2×1013, 5×10 13 and 8 × 1013 ions/cm2 in order to investigate the dependence of the paramagnetic relaxation rate of Fe3+ on fluence. The spectra are dominated by magnetic features displaying paramagnetic relaxation effects. The extracted spin-lattice relaxation rates show a slight increase with increasing ion fluence at corresponding temperatures and the area fraction of Fe3+ at room temperature reaches a maximum contribution of 80(3)% in the studied fluence range.