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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...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2010
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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. |
format | Online Article Text |
id | pubmed-5521751 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2010 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
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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