Elastic (stress-strain) halo associated to ion-induced nano-tracks in lithium niobate: role of crystal anisotropy

Rivera de Mena, Antonio; García, G.; Olivares Roza, Jimena; Crespillo Almenara, Miguel y Agullo Lopez, Fernando (2011). Elastic (stress-strain) halo associated to ion-induced nano-tracks in lithium niobate: role of crystal anisotropy. "Journal of Physics D: Applied Physics", v. 44 (n. 47); pp.. ISSN 0021-8979. https://doi.org/10.1088/0022-3727/44/47/475301.

Descripción

Título: Elastic (stress-strain) halo associated to ion-induced nano-tracks in lithium niobate: role of crystal anisotropy
Autor/es:
  • Rivera de Mena, Antonio
  • García, G.
  • Olivares Roza, Jimena
  • Crespillo Almenara, Miguel
  • Agullo Lopez, Fernando
Tipo de Documento: Artículo
Título de Revista/Publicación: Journal of Physics D: Applied Physics
Fecha: 2011
Volumen: 44
Materias:
Escuela: E.T.S.I. Industriales (UPM)
Departamento: Ingeniería Nuclear [hasta 2014]
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

The elastic strain/stress fields (halo) around a compressed amorphous nano-track (core) caused by a single high-energy ion impact on LiNbO3 are calculated. A method is developed to approximately account for the effects of crystal anisotropy of LiNbO3 (symmetry 3m) on the stress fields for tracks oriented along the crystal axes (X, Y or Z). It only considers the zero-order (axial) harmonic contribution to the displacement field in the perpendicular plane and uses effective Poisson moduli for each particular orientation. The anisotropy is relatively small; however, it accounts for some differential features obtained for irradiations along the crystallographic axes X, Y and Z. In particular, the irradiation-induced disorder (including halo) and the associated surface swelling appear to be higher for irradiations along the X- or Y-axis in comparison with those along the Z-axis. Other irradiation effects can be explained by the model, e.g. fracture patterns or the morphology of pores after chemical etching of tracks. Moreover, it offers interesting predictions on the effect of irradiation on lattice parameters

Más información

ID de Registro: 11401
Identificador DC: http://oa.upm.es/11401/
Identificador OAI: oai:oa.upm.es:11401
Identificador DOI: 10.1088/0022-3727/44/47/475301
URL Oficial: http://iopscience.iop.org/0022-3727/44/47/475301/
Depositado por: Memoria Investigacion
Depositado el: 25 Jul 2012 12:10
Ultima Modificación: 20 Abr 2016 19:29
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