http://www.cnr.it/ontology/cnr/individuo/prodotto/ID52124
Structural and Magnetic properties of Mn5Ge3 nanoclusters dispersed in MnxGe1-x /Ge(001)2x1 Diluted magnetic Semiconductors (Articolo in rivista)
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- Structural and Magnetic properties of Mn5Ge3 nanoclusters dispersed in MnxGe1-x /Ge(001)2x1 Diluted magnetic Semiconductors (Articolo in rivista) (literal)
- Anno
- 2007-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1016/j.susc.2007.06.020 (literal)
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- De Padova P. (a); Favre L. (b); Berbezier I. (b); Olivieri B. (c); Generosi A. (a); Paci B. (a); Rossi Albertini V. (a); Perfetti P. (a); Quaresima C. (a); Mariot J. M. (d); Taleb-Ibrahimi A. (e); Richter M.C. (f); Heckmann O. (f); DOrazio F. (g); Lucari F. (g); Hricovini K. (f) (literal)
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- (a) CNR-ISM, Roma, Italy
(b) L2MP Technopôle de Château, Marseille, France
(c) CNR-ISAC, Roma, Italy
(d) LCPMR (UMR 7614), Université Pierre et Marie Curie, Paris, France
(e) Synchrotron SOLEIL, Gif sur Yvette, France
(f) LPMS, Université de Cergy-Pontoise, Cergy-Pontoise, France
(g) INFM-Dipartimento di Fisica, Università di L'Aquila, L'Aquila, Italy (literal)
- Titolo
- Structural and Magnetic properties of Mn5Ge3 nanoclusters dispersed in MnxGe1-x /Ge(001)2x1 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 × 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~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. (literal)
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