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Ti-doped ZnO Thin Films Prepared at Different Ambient Conditions: Electronic Structures and Magnetic Properties

We present a comprehensive study on Ti-doped ZnO thin films using X-ray Absorption Fine Structure (XAFS) spectroscopy. Ti K edge XAFS spectra were measured to study the electronic and chemical properties of Ti ions in the thin films grown under different ambient atmospheres. A strong dependence of T...

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Detalles Bibliográficos
Autores principales: Yong, Zhihua, Liu, Tao, Uruga, Tomoya, Tanida, Hajime, Qi, Dongchen, Rusydi, Andrivo, Wee, Andrew T. S.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2010
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5521751/
http://dx.doi.org/10.3390/ma3063642
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author Yong, Zhihua
Liu, Tao
Uruga, Tomoya
Tanida, Hajime
Qi, Dongchen
Rusydi, Andrivo
Wee, Andrew T. S.
author_facet Yong, Zhihua
Liu, Tao
Uruga, Tomoya
Tanida, Hajime
Qi, Dongchen
Rusydi, Andrivo
Wee, Andrew T. S.
author_sort Yong, Zhihua
collection PubMed
description We present a comprehensive study on Ti-doped ZnO thin films using X-ray Absorption Fine Structure (XAFS) spectroscopy. Ti K edge XAFS spectra were measured to study the electronic and chemical properties of Ti ions in the thin films grown under different ambient atmospheres. A strong dependence of Ti speciation, composition, and local structures upon the ambient conditions was observed. The XAFS results suggest a major tetrahedral coordination and a 4+ valence state. The sample grown in a mixture of 80% Ar and 20% O(2) shows a portion of precipitates with higher coordination. A large distortion was observed by the Ti substitution in the ZnO lattice. Interestingly, the film prepared in 80% Ar, 20% O(2) shows the largest saturation magnetic moment of 0.827 ± 0.013 µ(B)/Ti.
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spelling pubmed-55217512017-07-28 Ti-doped ZnO Thin Films Prepared at Different Ambient Conditions: Electronic Structures and Magnetic Properties Yong, Zhihua Liu, Tao Uruga, Tomoya Tanida, Hajime Qi, Dongchen Rusydi, Andrivo Wee, Andrew T. S. Materials (Basel) Article We present a comprehensive study on Ti-doped ZnO thin films using X-ray Absorption Fine Structure (XAFS) spectroscopy. Ti K edge XAFS spectra were measured to study the electronic and chemical properties of Ti ions in the thin films grown under different ambient atmospheres. A strong dependence of Ti speciation, composition, and local structures upon the ambient conditions was observed. The XAFS results suggest a major tetrahedral coordination and a 4+ valence state. The sample grown in a mixture of 80% Ar and 20% O(2) shows a portion of precipitates with higher coordination. A large distortion was observed by the Ti substitution in the ZnO lattice. Interestingly, the film prepared in 80% Ar, 20% O(2) shows the largest saturation magnetic moment of 0.827 ± 0.013 µ(B)/Ti. MDPI 2010-06-09 /pmc/articles/PMC5521751/ http://dx.doi.org/10.3390/ma3063642 Text en © 2010 by the authors. Licensee MDPI, Basel, Switzerland. This article is an Open Access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).
spellingShingle Article
Yong, Zhihua
Liu, Tao
Uruga, Tomoya
Tanida, Hajime
Qi, Dongchen
Rusydi, Andrivo
Wee, Andrew T. S.
Ti-doped ZnO Thin Films Prepared at Different Ambient Conditions: Electronic Structures and Magnetic Properties
title Ti-doped ZnO Thin Films Prepared at Different Ambient Conditions: Electronic Structures and Magnetic Properties
title_full Ti-doped ZnO Thin Films Prepared at Different Ambient Conditions: Electronic Structures and Magnetic Properties
title_fullStr Ti-doped ZnO Thin Films Prepared at Different Ambient Conditions: Electronic Structures and Magnetic Properties
title_full_unstemmed Ti-doped ZnO Thin Films Prepared at Different Ambient Conditions: Electronic Structures and Magnetic Properties
title_short Ti-doped ZnO Thin Films Prepared at Different Ambient Conditions: Electronic Structures and Magnetic Properties
title_sort ti-doped zno thin films prepared at different ambient conditions: electronic structures and magnetic properties
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5521751/
http://dx.doi.org/10.3390/ma3063642
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