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Thermal evolution of cobalt nanocrystals embedded in silica
INFM-OGG European Synchrotron Radiation Facility.
INFM-CNR Sensor Lab.
CNR-IDASC SENSOR Lab and Dipartimento di Chimica e Fisica per l'Ingegneria e per i Materiali.
INFM-CNR Sensor Lab.
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2007 (English)In: Materials science & engineering. C, biomimetic materials, sensors and systems, ISSN 0928-4931, E-ISSN 1873-0191, Vol. 27, no 1, p. 193-196Article in journal (Refereed) Published
Abstract [en]

The structural evolution of cobalt nanoclusters synthesized in silica glass by ion implantation has been investigated upon thermal annealing. The samples were characterized by in-situ grazing incidence X-ray diffraction, exploiting a synchrotron radiation beam and following their evolution during thermal treatments in vacuo up to T = 800 °C. Before heating, the system is composed of hcp Co nanocrystals; we have not detected the transition from hcp to fcc structure that in the bulk phase occurs around 420 °C; nevertheless, the differences in the diffraction pattern recorded at T = 800 °C with respect to the corresponding one at room temperature suggest the presence of a second crystalline phase. © 2006 Elsevier B.V. All rights reserved.

Place, publisher, year, edition, pages
2007. Vol. 27, no 1, p. 193-196
Keywords [en]
Crystalline phase transition, Ion implantation, Metal nanoclusters
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Experimental Physics
Identifiers
URN: urn:nbn:se:ltu:diva-9099DOI: 10.1016/j.msec.2006.06.001Scopus ID: 2-s2.0-33751543498Local ID: 7aa082e3-10df-43ab-aec7-260b9cc3e592OAI: oai:DiVA.org:ltu-9099DiVA, id: diva2:982037
Note

Upprättat; 2007; 20141211 (albvom)

Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-12-14Bibliographically approved

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Vomiero, Alberto

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