Journal
NANOSCALE RESEARCH LETTERS
Volume 9, Issue -, Pages 1-8Publisher
SPRINGEROPEN
DOI: 10.1186/1556-276X-9-625
Keywords
Diluted magnetic semiconductor; ZnO; Room-temperature ferromagnetism; Nanoparticles
Funding
- Australian Research Council [DP110105338, DP140103041]
- Queen Elizabeth II fellowship
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Zn1-x MnxO nanoparticles have been synthesized by hydrothermal technique. The doping concentration of Mn can reach up to 9 at% without precipitation or secondary phase, confirmed by electron spin resonance (ESR) and synchrotron X-ray diffraction (XRD). Room-temperature ferromagnetism is observed in the as-prepared nanoparticles. However, the room-temperature ferromagnetism disappears after post-annealing in either argon or air atmosphere, indicating the importance of post-treatment for nanostructured magnetic semiconductors.
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