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Zinc Vacancy-Induced Room-Temperature Ferromagnetism in Undoped ZnO Thin Films
Joint Authors
Ren, Hongtao
Xiang, Gang
Gu, Gangxu
Zhang, Xi
Wang, Wenjun
Zhang, Peng
Wang, Baoyi
Cao, Xingzhong
Source
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-5, 5 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-08-15
Country of Publication
Egypt
No. of Pages
5
Main Subjects
Abstract EN
Undoped ZnO thin films are prepared by polymer-assisted deposition (PAD) and treated by postannealing at different temperatures in oxygen or forming gases (95% Ar+5% H2).
All the samples exhibit ferromagnetism at room temperature (RT).
SQUID and positron annihilation measurements show that post-annealing treatments greatly enhance the magnetizations in undoped ZnO samples, and there is a positive correlation between the magnetization and zinc vacancies in the ZnO thin films.
XPS measurements indicate that annealing also induces oxygen vacancies that have no direct relationship with ferromagnetism.
Further analysis of the results suggests that the ferromagnetism in undoped ZnO is induced by Zn vacancies.
American Psychological Association (APA)
Ren, Hongtao& Xiang, Gang& Gu, Gangxu& Zhang, Xi& Wang, Wenjun& Zhang, Peng…[et al.]. 2012. Zinc Vacancy-Induced Room-Temperature Ferromagnetism in Undoped ZnO Thin Films. Journal of Nanomaterials،Vol. 2012, no. 2012, pp.1-5.
https://search.emarefa.net/detail/BIM-997534
Modern Language Association (MLA)
Ren, Hongtao…[et al.]. Zinc Vacancy-Induced Room-Temperature Ferromagnetism in Undoped ZnO Thin Films. Journal of Nanomaterials No. 2012 (2012), pp.1-5.
https://search.emarefa.net/detail/BIM-997534
American Medical Association (AMA)
Ren, Hongtao& Xiang, Gang& Gu, Gangxu& Zhang, Xi& Wang, Wenjun& Zhang, Peng…[et al.]. Zinc Vacancy-Induced Room-Temperature Ferromagnetism in Undoped ZnO Thin Films. Journal of Nanomaterials. 2012. Vol. 2012, no. 2012, pp.1-5.
https://search.emarefa.net/detail/BIM-997534
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-997534