On the exciton model for ion-beam damage: The example of TiO2

Rivera de Mena, Antonio; Crespillo Almenara, Miguel; Olivares Roza, Jimena; Sanz, R.; Jensen, J. y Agullo Lopez, Fernando (2010). On the exciton model for ion-beam damage: The example of TiO2. En: "15th International Conference on Radiation Effects in Insulators (REI)", 30/08/2009 - 04/09/2009, Padova, Italia. ISBN ISSN 0168-583X.

Descripción

Título: On the exciton model for ion-beam damage: The example of TiO2
Autor/es:
  • Rivera de Mena, Antonio
  • Crespillo Almenara, Miguel
  • Olivares Roza, Jimena
  • Sanz, R.
  • Jensen, J.
  • Agullo Lopez, Fernando
Tipo de Documento: Ponencia en Congreso o Jornada (Artículo)
Título del Evento: 15th International Conference on Radiation Effects in Insulators (REI)
Fechas del Evento: 30/08/2009 - 04/09/2009
Lugar del Evento: Padova, Italia
Título del Libro: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. Proceedings of the 15th International Conference on Radiation Effects in Insulators (REI)
Fecha: Octubre 2010
ISBN: ISSN 0168-583X
Volumen: 268, I
Materias:
Palabras Clave Informales: Damage; Excitons; Ion beams; Rutile; RBS/C; Channelling amorphization threshold
Escuela: E.T.S.I. Telecomunicación (UPM)
Departamento: Tecnología Electrónica [hasta 2014]
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

The non-radiative exciton decay model recently developed to account for swift-ion-beam damage to LiNbO3 is, here, discussed within a general physical perspective, taking previous work on alkali halides as a reference. Some general rules for the validity of excitonic models have been put forward, allowing one to predict the irradiation behaviour of other materials. As a new example of application, some preliminary data on the generation and growth of uniform amorphous layers induced by irradiation with Br at 13 MeV and 25 MeV have been performed on rutile (TiO2). In addition sub-threshold irradiations with Br ions at 9 MeV have been carried out. Defects generation is observed as a result. This effect is explained with the exciton model. Experiments are in the electronic excitation regime and use moderate fluences in the range of 6 × 1012 to 1.5 × 1014 cm−2. The results show similar features to those found for LiNbO3 and are, in principle, consistent with a non-radiative exciton decay model.

Más información

ID de Registro: 8485
Identificador DC: http://oa.upm.es/8485/
Identificador OAI: oai:oa.upm.es:8485
URL Oficial: http://www.sciencedirect.com/science/journal/0168583X
Depositado por: Memoria Investigacion
Depositado el: 15 Jul 2011 08:32
Ultima Modificación: 23 Oct 2014 05:11
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