Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/50468
Title: Blue luminescence at room temperature in defective MgO films
Author: Martinez-Boubeta, Carlos
Martinez, A.
Hernández Márquez, Sergi
Pellegrino, Paolo
Antony, Aldrin
Bertomeu i Balagueró, Joan
Balcells i Argemí, Lluís
Konstantinović, Zorica
Martínez Perea, Benjamin
Keywords: Espintrònica
Semiconductors
Microelectrònica
Pel·lícules fines
Nanoestructures
Luminescència
Espectroscòpia de luminiscència
Òxid de magnesi
Ferromagnetisme
Spintronics
Semiconductors
Microelectronics
Thin films
Nanostructures
Luminescence
Luminescence spectroscopy
Magnesium oxide
Ferromagnetism
Issue Date: 2011
Publisher: Elsevier Ltd
Abstract: Luminescence spectroscopy has been used to characterize MgO films prepared by rf-sputtering. A clear correlation is found between the appearance of an emission peak centered at approximately 460 nm and the detection of ferromagnetic ordering in the samples. We suggest that cationic vacancies are responsible for the blue-light emission by introducing p states into the electronic band-gap. In accordance with this, our results strongly indicate that cationic vacancies are at the heart of the appearance of long-range magnetic ordering in MgO films.
Note: Versió postprint del document publicat a: http://dx.doi.org/10.1016/j.ssc.2011.03.007
It is part of: Solid State Communications, 2011, vol. 151, num. 10, p. 751-753
Related resource: http://dx.doi.org/10.1016/j.ssc.2011.03.007
URI: http://hdl.handle.net/2445/50468
ISSN: 0038-1098
Appears in Collections:Articles publicats en revistes (Física Aplicada)

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