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Vacancy‐mediated room‐temperature ferromagnetism in Zn 1− x Mn x O thin films
Author(s) -
Gopalakrishnan N.,
Balakrishnan L.,
Srimathy B.,
Kumar M. Senthil,
Balasubramanian T.
Publication year - 2010
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.201026038
Subject(s) - ferromagnetism , diamagnetism , materials science , hall effect , photoluminescence , condensed matter physics , analytical chemistry (journal) , oxygen , vacancy defect , thin film , magnetometer , sputtering , polaron , diffraction , x ray crystallography , electrical resistivity and conductivity , chemistry , magnetic field , physics , nanotechnology , optoelectronics , optics , electron , organic chemistry , quantum mechanics , chromatography
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.