Structural and magnetic characterization of Fe0.3Ti0.7O2-δ films obtained by pulsed laser deposition

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We present a study of crystalline structure, local environment around the magnetic atoms and magnetic behaviour of Fe0.3Ti0.7O2-δ films, produced by Pulsed Laser Deposition, as a function of oxygen pressure and substrate temperature. Dark films were obtained by deposition at low O2 pressure (between...

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Autores principales: Rodríguez Torres, C.E., Duhalde, S., Fabiana Cabrera, A., Sánchez, F.H., Chilliote, C., Florencia Vignolo, M.
Formato: JOUR
Materias:
Fe doped TiO2 films
Magnetic semiconductors
Thin films
XAFS
Coercive force
Crystallization
Deposition
Ferromagnetic materials
Magnetization
Pulsed laser deposition
Titanium oxides
Magnetic characterization
Oxygen pressure
Transparent films
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_09214526_v384_n1-2_p341_RodriguezTorres
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_09214526_v384_n1-2_p341_RodriguezTorres2023-10-03T15:45:17Z Structural and magnetic characterization of Fe0.3Ti0.7O2-δ films obtained by pulsed laser deposition Rodríguez Torres, C.E. Duhalde, S. Fabiana Cabrera, A. Sánchez, F.H. Chilliote, C. Florencia Vignolo, M. Fe doped TiO2 films Magnetic semiconductors Thin films XAFS Coercive force Crystallization Deposition Ferromagnetic materials Magnetization Pulsed laser deposition Titanium oxides Fe doped TiO2 films Magnetic characterization Oxygen pressure Transparent films Thin films We present a study of crystalline structure, local environment around the magnetic atoms and magnetic behaviour of Fe0.3Ti0.7O2-δ films, produced by Pulsed Laser Deposition, as a function of oxygen pressure and substrate temperature. Dark films were obtained by deposition at low O2 pressure (between 2×10-3 and 10-2 Pa). These films are ferromagnetic with coercivities around 0.03-0.04 T. Fe atoms are found to be predominantly metallic Fe. Transparent films were obtained when deposition was performed at high O2 pressure (between 4 and 20 Pa). Fe atoms are mainly in +3 valence state. These films have a component magnetically ordered probably corresponding to α-Fe(Ti)2O3 and a paramagnetic one attributed to Fe substituted anatase. After a thermal treatment Fe changes to +2 valence state and α-Fe(Ti)2O3 orders in the ilmenite phase increasing ten times the saturation magnetization of the magnetically ordered (hysteretic) component. © 2006 Elsevier B.V. All rights reserved. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_09214526_v384_n1-2_p341_RodriguezTorres
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Fe doped TiO2 films
Magnetic semiconductors
Thin films
XAFS
Coercive force
Crystallization
Deposition
Ferromagnetic materials
Magnetization
Pulsed laser deposition
Titanium oxides
Fe doped TiO2 films
Magnetic characterization
Oxygen pressure
Transparent films
Thin films
spellingShingle Fe doped TiO2 films
Magnetic semiconductors
Thin films
XAFS
Coercive force
Crystallization
Deposition
Ferromagnetic materials
Magnetization
Pulsed laser deposition
Titanium oxides
Fe doped TiO2 films
Magnetic characterization
Oxygen pressure
Transparent films
Thin films
Rodríguez Torres, C.E.
Duhalde, S.
Fabiana Cabrera, A.
Sánchez, F.H.
Chilliote, C.
Florencia Vignolo, M.
Structural and magnetic characterization of Fe0.3Ti0.7O2-δ films obtained by pulsed laser deposition
topic_facet Fe doped TiO2 films
Magnetic semiconductors
Thin films
XAFS
Coercive force
Crystallization
Deposition
Ferromagnetic materials
Magnetization
Pulsed laser deposition
Titanium oxides
Fe doped TiO2 films
Magnetic characterization
Oxygen pressure
Transparent films
Thin films
description We present a study of crystalline structure, local environment around the magnetic atoms and magnetic behaviour of Fe0.3Ti0.7O2-δ films, produced by Pulsed Laser Deposition, as a function of oxygen pressure and substrate temperature. Dark films were obtained by deposition at low O2 pressure (between 2×10-3 and 10-2 Pa). These films are ferromagnetic with coercivities around 0.03-0.04 T. Fe atoms are found to be predominantly metallic Fe. Transparent films were obtained when deposition was performed at high O2 pressure (between 4 and 20 Pa). Fe atoms are mainly in +3 valence state. These films have a component magnetically ordered probably corresponding to α-Fe(Ti)2O3 and a paramagnetic one attributed to Fe substituted anatase. After a thermal treatment Fe changes to +2 valence state and α-Fe(Ti)2O3 orders in the ilmenite phase increasing ten times the saturation magnetization of the magnetically ordered (hysteretic) component. © 2006 Elsevier B.V. All rights reserved.
format JOUR
author Rodríguez Torres, C.E.
Duhalde, S.
Fabiana Cabrera, A.
Sánchez, F.H.
Chilliote, C.
Florencia Vignolo, M.
author_facet Rodríguez Torres, C.E.
Duhalde, S.
Fabiana Cabrera, A.
Sánchez, F.H.
Chilliote, C.
Florencia Vignolo, M.
author_sort Rodríguez Torres, C.E.
title Structural and magnetic characterization of Fe0.3Ti0.7O2-δ films obtained by pulsed laser deposition
title_short Structural and magnetic characterization of Fe0.3Ti0.7O2-δ films obtained by pulsed laser deposition
title_full Structural and magnetic characterization of Fe0.3Ti0.7O2-δ films obtained by pulsed laser deposition
title_fullStr Structural and magnetic characterization of Fe0.3Ti0.7O2-δ films obtained by pulsed laser deposition
title_full_unstemmed Structural and magnetic characterization of Fe0.3Ti0.7O2-δ films obtained by pulsed laser deposition
title_sort structural and magnetic characterization of fe0.3ti0.7o2-δ films obtained by pulsed laser deposition
url http://hdl.handle.net/20.500.12110/paper_09214526_v384_n1-2_p341_RodriguezTorres
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