Structural and magnetic properties of Mn5Ge3 nanoclusters dispersed in MnxGe1-x/Ge(001)2 x 1 diluted magnetic semiconductors (Articolo in rivista)

Type
Label
  • Structural and magnetic properties of Mn5Ge3 nanoclusters dispersed in MnxGe1-x/Ge(001)2 x 1 diluted magnetic semiconductors (Articolo in rivista) (literal)
Anno
  • 2007-01-01T00:00:00+01:00 (literal)
Alternative label
  • De Padova, P; Favre, L; Berbezier, I; Olivieri, B; Generosi, A; Paci, B; Albertini, VR; Perfetti, P; Quaresima, C; Mariot, JM; Taleb-Ibrahimi, A; Richter, MC; Heckmann, O; D'Orazio, F; Lucari, F; Hricovini, K (2007)
    Structural and magnetic properties of Mn5Ge3 nanoclusters dispersed in MnxGe1-x/Ge(001)2 x 1 diluted magnetic semiconductors
    in Surface science
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • De Padova, P; Favre, L; Berbezier, I; Olivieri, B; Generosi, A; Paci, B; Albertini, VR; Perfetti, P; Quaresima, C; Mariot, JM; Taleb-Ibrahimi, A; Richter, MC; Heckmann, O; D'Orazio, F; Lucari, F; Hricovini, K (literal)
Pagina inizio
  • 4370 (literal)
Pagina fine
  • 4374 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 601 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • CNR, ISM, I-00133 Rome, Italy; L2MP, Technopole Chateau, F-13451 Marseille, France; CNR, ISAC, I-00133 Rome, Italy; Univ Paris 05, LCPMR, UMR 7614, F-75005 Paris, France; Synchroton SOLEIL, F-91192 Gif Sur Yvette, France; Univ Cergy Pontoise, LPMS, F-95031 Cergy Pontoise, France; Univ Aquila, Dipartimento Fis, INFM, I-67010 Coppito, Italy (literal)
Titolo
  • Structural and magnetic properties of Mn5Ge3 nanoclusters dispersed in MnxGe1-x/Ge(001)2 x 1 diluted magnetic semiconductors (literal)
Abstract
  • We investigated the structural and magnetic properties of MnxGe1-x, with 0.02 <= x <= 0.1. The MnxGe1-x samples were grown on Ge(0 0 1)2 x 1 by molecular beam epitaxy, at a substrate temperature of 520 K. The samples were characterized in situ by reflection high-energy electron diffraction and ex situ by high-resolution transmission electron microscopy, energy dispersive X-ray reflectivity and magneto-optical Kerr effect. From microscopy images we evidenced on all samples the presence of Mn5Ge3 nanocrystallites in addition to the MnxGe1-x diluted magnetic semiconductor with an estimated Mn concentration x approximate to 1.5%. The size and the density of the Mn5Ge3 precipitates were found to increase with increasing the Mn concentration x. Magnetic analysis showed ferromagnetism with a Curie temperature of 280 K for all samples. (C) 2007 Elsevier B.V. All rights reserved. (literal)
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