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Photochromism and magneto-optic response of ZnO:Mn semiconductor quantum dots fabricated by microemulsion route

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Misra N., Roy M., Mohanta D., Baruah K., Choudhury A.
Open Physics
|
2008
|
vol. 6
|
issue 1
109-115
EN
ZnO:Mn semiconductor quantum dots were prepared by solution casting led microemulsion route. Quantum dots of average size ∼2 nm were noticed in transmission electron micrographs. The present work highlights colour change phenomena (photochromic effect) of quantum dots while subjected to photon illumination. The magneto-optic measurements e.g. magnetic field (H) vs angle of rotation (θ) show step like behavior and is ascribed to the quantum confinement effect of diluted magnetic ZnO:Mn nanostructures. Further, underlying mechanism responsible for exhibiting photochromism and magneto-optic effects are also discussed.
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