Vacancy-mediated room-temperature ferromagnetism in Zn1−xMnxO thin films

The effect of oxygen vacancies on ferromagnetism (FM) in Zn1−xMnxO 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 mag...

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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
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
doping
Exact sciences and technology
ferromagnetism
Magnetic properties and materials
Magnetic properties of monolayers and thin films
Magnetic properties of surface, thin films and multilayers
Magnetic semiconductors
manganese
Physics
sputtering
Studies of specific magnetic materials
vacancies
ZnO
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Summary:The effect of oxygen vacancies on ferromagnetism (FM) in Zn1−xMnxO 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