Autores: <div class="autor_fcen" id="5357">Marchi, M.C.</div>; <div class="autor_fcen" id="135">Bilmes, S.A.</div>; Ribeiro, C.T.M.; Ochoa, E.A.; Kleinke, M.; <div class="autor_fcen" id="213">Alvarez, F.</div>
Fecha de publicación: 2010.
Idioma: inglés.
Resumen:
A comprehensive study of nonstoichiometry titanium oxide thin films (TiOx, 0.3≤x≤2) prepared by ion beam deposition technique is reported. The physical properties of the material are studied by ultraviolet and x-ray photoelectron, Raman, and Fourier transform infrared spectroscopies, and atomic force microscopy. An abrupt transition from metallic characteristics to a wide gap semiconductor is observed in a very narrow range of oxygen variation. Concomitantly with this change the crystal structure and morphology suffer remarkable physical properties modifications. This transformation is ascribed to surface-volume energy minimization due to the influence of oxygen determining the size of the TiO2 particles during coalescence. © 2010 American Institute of Physics.
Afiliación de los autores: Marchi, M.C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
Afiliación de los autores: Bilmes, S.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
Afiliación de los autores: Alvarez, F. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
Palabras claves: Abrupt transition; Comprehensive studies; Crystal structure and morphology; Energy minimization; Influence of oxygen; Ion beam deposition; Ion beam deposition technique; Non-stoichiometry; TiO; Titanium oxide thin films; Wide-gap semiconductor; X-ray photoelectrons; Atomic force microscopy; Atomic spectroscopy; Chemical modification; Coalescence; Crystal structure; Fourier transform infrared spectroscopy; Fourier transforms; Ion beams; Oxide films; Oxygen; Photoelectron spectroscopy; Physical properties; Stoichiometry; Titanium; Titanium oxides; Film preparation.
Repositorio: Biblioteca Digital (UBA-FCEN). Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales