Blue luminescence at room temperature in defective MgO films


Autoria(s): 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
Data(s)

21/02/2014

Resumo

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.

Identificador

http://hdl.handle.net/2072/224143

Idioma(s)

eng

Publicador

Elsevier Ltd

Direitos

(c) Elsevier Ltd, 2011

info:eu-repo/semantics/openAccess

Palavras-Chave #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
Tipo

info:eu-repo/semantics/article

info:eu-repo/semantics/acceptedVersion