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http://hdl.handle.net/2445/50468| Title: | Blue luminescence at room temperature in defective MgO films |
| Author: | Martínez Boubeta, José 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 |
| URI: | http://hdl.handle.net/2445/50468 |
| Related resource: | http://dx.doi.org/10.1016/j.ssc.2011.03.007 |
| ISSN: | 0038-1098 |
| Appears in Collections: | Articles publicats en revistes (Física Aplicada) |
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| 593563.pdf | 400.04 kB | Adobe PDF | View/Open |
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