without changing your settings we'll assume you are happy to receive all RSC cookies.
You can change your cookie settings by navigating to our Privacy and Cookies page and following the instructions. These instructions
are also obtainable from the privacy link at the bottom of any RSC page.
We demonstrate a clear correlation between the quantum confinement effect and magnetization of pristine tin dioxide (SnO2) quantum dots (QDs). We have synthesized single crystalline QDs of SnO2 above and below the exciton Bohr radius (2.7 nm). Such fine control over the size of the QDs is a challenging task. The 2 nm QDs belong to strong confinement regimes and are found to be ferromagnetic in nature, whereas 3 nm QDs are diamagnetic like bulk SnO2. To the best of our knowledge, so far no experimental studies on the influence of confinement effect on the magnetic behaviour of SnO2 QDs have been reported. We propose two possible mechanisms based on the theory of localization of holes due to a strong confinement effect to explain room temperature ferromagnetism in 2 nm QDs. The localization of holes is confirmed from photoluminescence and UV visible spectroscopy.
Fetching data from CrossRef. This may take some time to load.
Journal of Materials Chemistry
- Information Point
This text is added as a work around for heading error in Accessibility testing