Role of cobalt in room-temperature ferromagnetic Co-doped ZnO thin films | Zendy

C. C. Wang | Zendy; M. Liu | Zendy; B.Y. Man | Zendy; C. S. Chen | Zendy; S. Z. Jiang | Zendy; Senlin Yang | Zendy; Xiuli Gao | Zendy; Shicai Xu | Zendy; B. Hu | Zendy; Zhoujian Sun | Zendy; Junfeng Guo | Zendy; Jiwei Hou | Zendy

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Role of cobalt in room-temperature ferromagnetic Co-doped ZnO thin films

Author(s) -

C. C. Wang,

M. Liu,

B.Y. Man,

C. S. Chen,

S. Z. Jiang,

Senlin Yang,

Xiuli Gao,

Shicai Xu,

B. Hu,

Zhoujian Sun,

Junfeng Guo,

Jiwei Hou

Publication year - 2012

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.3698304

Subject(s) - x ray photoelectron spectroscopy , cobalt , thin film , ferromagnetism , pulsed laser deposition , materials science , doping , analytical chemistry (journal) , valence (chemistry) , oxygen , metal , inorganic chemistry , chemical engineering , nanotechnology , chemistry , metallurgy , optoelectronics , condensed matter physics , physics , organic chemistry , chromatography , engineering

A series of Co-doped ZnO thin films were prepared under various deposition conditions using the pulsed laser deposition method. X-ray photoelectron spectroscopy (XPS) and XPS depth profiling were used to detect the elemental valence states of Zn, Co and O. It was found that the films deposited under low temperature and high oxygen pressure exhibited intrinsic ferromagnetic properties due to oxidation of Co (Co2+) from the material. However, when the films were deposited under high temperature and low oxygen pressure, metallic cobalt (Co0) appeared and the ferromagnetism was greatly enhanced

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