Vacancy‐mediated room‐temperature ferromagnetism in Zn 1− x Mn x O thin films

The effect of oxygen vacancies on ferromagnetism (FM) in Zn 1− x Mn x O thin films grown by radio frequency (RF) sputtering has been investigated. The grown films at different oxygen pressures have been characterized by X‐ray diffraction (XRD), Hall effect, photoluminescence (PL) and vibrating sampl...

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Bibliographic Details
Published in:Physica status solidi. A, Applications and materials science Applications and materials science, 2010-09, Vol.207 (9), p.2180-2184
Main Authors: Gopalakrishnan, N., Balakrishnan, L., Srimathy, B., Kumar, M. Senthil, Balasubramanian, T.
Format: Article
Language:English
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Summary:The effect of oxygen vacancies on ferromagnetism (FM) in Zn 1− x Mn x O thin films grown by radio frequency (RF) sputtering has been investigated. The grown films at different oxygen pressures have been characterized by X‐ray diffraction (XRD), Hall effect, photoluminescence (PL) and vibrating sample magnetometry (VSM). The observed ferromagnetism/diamagnetism by the VSM measurement due to the variation of oxygen vacancies has been confirmed by XRD, PL, and Hall results. The vacancy‐mediated FM has been explained by the formation of magnetic polarons.
ISSN:1862-6300
1862-6319
DOI:10.1002/pssa.201026038