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Ferromagnetic Mn-doped Si0.3Ge0.7 nanodots self-assembled on Si(100) |
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| Authors: | De Padova P Olivieri B Mariot J-M Favre L Berbezier I Quaresima C Paci B Generosi A Rossi Albertini V Cricenti A Ottaviani C Luce M Testa A M Peddis D Fiorani D Scarselli M De Crescenzi M Heckmann O Richter M C Hricovini K d'Acapito F |
| Institution: | Consiglio Nazionale delle Ricerche-Istituto di Struttura della Materia, via Fosso del Cavaliere, 00133 Roma, Italy. paola.depadova@ism.cnr.it |
| Abstract: | Densely packed epitaxial Mn-doped Si(0.3)Ge(0.7) nanodots self-assembled on Si(100) have been obtained. Their structural properties were studied using reflection high-energy electron diffraction, energy dispersive x-ray diffraction, atomic force microscopy, extended x-ray absorption fine structure measurements and high-resolution transmission electron microscopy. Mn(5)Ge(1)Si(2) crystallites embedded in Si(0.3)Ge(0.7) were found. They exhibit a ferromagnetic behaviour with a Curie temperature of about 225?K. |
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