Spin-lattice relaxations of paramagnetic Fe3+ in ZnO (Articolo in rivista)

Type
Label
  • Spin-lattice relaxations of paramagnetic Fe3+ in ZnO (Articolo in rivista) (literal)
Anno
  • 2012-01-01T00:00:00+01:00 (literal)
Alternative label
  • T E Mølholt1, H P Gunnlaugsson2, K Johnston3, R Mantovan4, H Masenda5, D Naidoo5, S Ólafsson1, K Bharuth-Ram6,7, H P Gislason1, G Langouche8, R Sielemann9 and G Weyer2 (2012)
    Spin-lattice relaxations of paramagnetic Fe3+ in ZnO
    in Physica scripta (Online); IOP PUBLISHING, BRISTOL (Regno Unito)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • T E Mølholt1, H P Gunnlaugsson2, K Johnston3, R Mantovan4, H Masenda5, D Naidoo5, S Ólafsson1, K Bharuth-Ram6,7, H P Gislason1, G Langouche8, R Sielemann9 and G Weyer2 (literal)
Pagina inizio
  • 014006 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://iopscience.iop.org/1402-4896/2012/T148/014006 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • T148 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1 Science Institute, University of Iceland, Dunhaga 3, 107 Reykjavík, Iceland 2 Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus C, Denmark 3 PH Department, ISOLDE/CERN, 1211 Geneva 23, Switzerland 4 Laboratorio MDM, IMM-CNR, Via Olivetti 2, 20846 Agrate Brianza (MB), Italy 5 School of Physics, University of the Witwatersrand, WITS 2050, South Africa 6 School of Physics, University of KwaZulu-Natal, Durban 4001, South Africa 7 iThemba LABS, PO Box 722, Somerset West 7129, South Africa 8 Instituut voor Kern-en Stralingsfysika, University of Leuven, B-3001 Leuven, Belgium 9 Helmholtz-Zentrum Berlin für Materialien und Energie, D-14109 Berlin, Germany (literal)
Titolo
  • Spin-lattice relaxations of paramagnetic Fe3+ in ZnO (literal)
Abstract
  • The spin-lattice relaxation rate of paramagnetic Fe3+ in single-crystalline ZnO has been determined following low-fluence (?<1012 cm-2) 60 keV implantation of 57Mn+ (T1/2=1.5 min) and emission Mössbauer spectroscopy on the 57Fe daughter nucleus in the temperature range from 300 to 664 K. The spin-lattice relaxation of Fe3+ is found to follow a T9 temperature dependence, in contrast to the T2 dependence expected for a two-phonon Raman process determined in both single-crystal MgO and ?-Al2O3 using the same analysis method of the Mössbauer spectra measured without an applied external magnetic field. This is an unexpected result since ZnO has a lower Debye temperature than both MgO and ?-Al2O3. (literal)
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