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Taylor and Francis Group, Ferroelectrics, 1(390), p. 3-9

DOI: 10.1080/00150190902993309

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Raman investigation of Fe in - diffused photorefractive waveguides on lithium niobate substrates

Journal article published in 2009 by S. Mignoni, M. D. Fontana, P. Bourson, M. V. Ciampolillo, Ciampolillo Mv, M. Bazzan, N. Argiolas ORCID, C. Sada ORCID
This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

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Abstract

Fe in—diffusion was performed by depositing a Fe film on X-cut LN substrates by sputtering and subsequent annealing in a controlled atmosphere. The photorefractive properties of the Fe:LN film were studied by confocal Micro–Raman spectroscopy. The presence of unexpected lines in the Raman spectra of the samples was detected and attributed to the activation by the photoinduced space charge field which is also the cause of the photorefractive effect. The results in Fe-doped samples are compared to those recorded in nominally pure congruent crystals.