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2011

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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/50468

Blue luminescence at room temperature in defective MgO films

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http://dx.doi.org/10.1016/j.ssc.2011.03.007

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.

Subject

Espintrònica, Semiconductors, Microelectrònica, Pel·lícules fines, Nanoestructures, Luminescència, Espectroscòpia de luminiscència, Òxid de magnesi, Ferromagnetisme

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Spintronics, Semiconductors, Microelectronics, Thin films, Nanostructures, Luminescence, Luminescence spectroscopy, Magnesium oxide, Ferromagnetism

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MARTÍNEZ BOUBETA, José Carlos, et al. Blue luminescence at room temperature in defective MgO films. Solid State Communications. 2011. Vol. 151, num. 10, pags. 751-753. ISSN 0038-1098. [consulted: 7 of June of 2026]. Available at: https://hdl.handle.net/2445/50468

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